<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2013-6463</journal-id>
<journal-title><![CDATA[Revista Española de Sanidad Penitenciaria]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. esp. sanid. penit.]]></abbrev-journal-title>
<issn>2013-6463</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Española de Sanidad Penitenciaria]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2013-64632012000100004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio multicéntrico de Prevalencia de Infección por el VIH y factores asociados en las prisiones de España]]></article-title>
<article-title xml:lang="en"><![CDATA[Multi-centre study of the prevalence of infection from HIV and associated factors in Spanish prisons]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marco]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saiz de la Hoya]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Guerrero]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Centro Penitenciario de Hombres de Barcelona Servicios Sanitarios ]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>España</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Centro Penitenciario de Alicante I  ]]></institution>
<addr-line><![CDATA[Alicante ]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,Centro Penitenciario de Castellón I  ]]></institution>
<addr-line><![CDATA[Castellón ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2012</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2012</year>
</pub-date>
<volume>14</volume>
<numero>1</numero>
<fpage>19</fpage>
<lpage>27</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S2013-64632012000100004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S2013-64632012000100004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S2013-64632012000100004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Objetivo: Determinar la prevalencia y factores asociados de infección por VIH en presos de España. Material y método: Estudio observacional y transversal (junio 2008). Se determinó para 62.000 internos una "n" de 364 (variabilidad 5%, error &alpha; 5% y corrección 10% por posibles pérdidas). Se seleccionaron aleatoriamente 18 prisiones y 21 internos/prisión. Medida de frecuencia: prevalencia. Magnitud de la asociación: odds ratio de prevalencia (ORp) con IC del 95%. Nivel de significación estadística p< 0,05. Resultados: Se estudiaron 371 presos (91,6% varones, 66,9% &le; 40 años, 60,6% español, 23,5% UDI y 71,2% encarcelado< 5 años). La prevalencia de VIH fue del 10,8% (IC: 7,5-14). El 85% estaba coinfectado con VHC, el 12,5% con VHB y VHC y el 63,2% con el M. tuberculosis, que representa una proporción para la población penitenciaria del 9,2%, 1,3% y 6,7%, respectivamente. Se asoció ser VIH+ a tener &gt;40 años (p<0,01); estar preso &gt;5 años (p<0,001); no ser árabe (p<0.01); ser español (p<0,001); ser UDI (p<0,001); estar coinfectado con VHC (p<0,001) y estar coinfectado con VHB (p<0,001]. El análisis multivariante confirmó la asociación con: a) tener &ge;40 años [OR= 2,66 (IC:1,16-6,07), b) ser UDI [OR=28,08 (IC:9,61-81,99); c) estar infectado por el VHC [OR=6,96 (IC:1,90-25,39)]; y d) estar infectado por el VHB [OR= 13,52 (IC=1,76-103,82)]. Conclusión: La prevalencia de infección por VIH en presos de España es del 10,8%. Los infectados suelen ser UDI y mayores de 40 años. El 85% está coinfectado con el VHC y el 12,5% con el VHB y VHC.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Objective: To determine the prevalence and associated factors of HIV infection amongst inmates in Spain. Material and Methods: Observational and transversal study (June 2008). For 62,000 inmates an "n" of 364 was determined (5% variability, error correction &alpha; 5% and 10% missing). 18 prisons were randomly selected and 21 inmates/prison. Frequency measurement: prevalence. Magnitude of the association: odds ratio of prevalence (ORP) with 95%. Statistical significance p<0.05. Results: 371 prisoners were studied (91.6% male, 66.9% &le; 40 years, 60.6% Spanish, 23.5% IDU and 71.2% incarcerated <5 years). HIV prevalence was 10.8% (CI: 7.5 to 14). 85% were co-infected with HCV, 12.5% with HBV and HCV and 63.2% with M. tuberculosis. This represents a proportion to the prison population of 9.2%, 1.3% and 6.7% respectively. HIV infection was associated with: a) &gt; 40 years (p <0.01), b) imprisoned&gt; 5 years (p <0.001), c) non-Arab (p <0.01), d) Spanish nationality (p <0.001), e) IDUs (p <0.001), f) co-infected with HCV (p <0.001), and g) co-infected with HBV (p <0.001]. Multivariate analysis confirmed the association: a) &ge; 40 years [OR = 2.66 (CI : 1.16-6.07), b) IDU [OR = 28.08 (IC-9.61-81.99), c) infected with HCV [OR = 6.96 (CI :1.90-25.39)], and d) infected with HBV [OR = 13.52 (CI = 1.76-103.82). Conclusion: The prevalence of HIV infection among prisoners in Spain is 10.8%. Those that are infected are usually IDUs and over 40 years. 85% are co-infected with HCV and 12.5% with HBV and HCV.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Prisiones]]></kwd>
<kwd lng="es"><![CDATA[Epidemiología]]></kwd>
<kwd lng="es"><![CDATA[Prevalencia]]></kwd>
<kwd lng="es"><![CDATA[Anticuerpos anti-VIH]]></kwd>
<kwd lng="es"><![CDATA[Serodiagnóstico del sida]]></kwd>
<kwd lng="es"><![CDATA[Prisioneros]]></kwd>
<kwd lng="es"><![CDATA[VIH]]></kwd>
<kwd lng="en"><![CDATA[Prisons]]></kwd>
<kwd lng="en"><![CDATA[Epidemiology]]></kwd>
<kwd lng="en"><![CDATA[Prevalence]]></kwd>
<kwd lng="en"><![CDATA[HIV Antibodies]]></kwd>
<kwd lng="en"><![CDATA[Aids Serodiagnosis]]></kwd>
<kwd lng="en"><![CDATA[Prisoners]]></kwd>
<kwd lng="en"><![CDATA[HIV]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b><a name="top"></a></b></font><font face="Verdana" size="4"><b>Estudio multic&eacute;ntrico de Prevalencia de Infecci&oacute;n por el VIH y factores asociados en las prisiones de Espa&ntilde;a</b></font></p>     <p><font face="Verdana" size="4"><b>Multi-centre study of the prevalence of infection from HIV and associated factors in Spanish prisons</b></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Marco A.<sup>1</sup>, Saiz de la Hoya P.<sup>2</sup>, Garc&iacute;a-Guerrero<sup>3</sup> J. y Grupo PREVALHEP*</b></font></p>     <p><font face="Verdana" size="2"><sup>1</sup>Servicios Sanitarios del Centro Penitenciario de Hombres de Barcelona, España,    <br><sup>2</sup>Centro Penitenciario de Alicante I y <sup>     <br> 3</sup>Centro Penitenciario de Castell&oacute;n I.</font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">*El Grupo Prevalhep está compuesto por: M. Bedia (CP. Alicante I); JM Castro (CP Huelva); I. Faraco (CP Sevilla I); J. García-Guerrero (C.P. Castellón I); C. Hoyos (CP Cáceres); MD. Isach (CP Picasent); J. De Juan (CP Córdoba); G. López-Palacios (C.P. El Dueso); A. Mallo (CP León); A. Marco (C. P. Barcelona-Hombres); J. Martínez-Pérez (CP Almería); R. Moreno (CP Madrid II); R. Planella (CP Ponent); E.Pozo (CP Villabona); J. Quiñonero (CP Murcia); P. Saiz de la Hoya (CP Alicante I); C. Suárez (C. P. Teixeiro); F. Sternberg (CP Madrid VI); N. Teixidó (CP Brians I) y L. Vasallo (CP Topas).</font></p>     <p><font face="Verdana" size="2"><a href="#bajo">Dirección para correspondencia</a></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p> <hr size="1">     <p><font face="Verdana" size="2"><b>RESUMEN</b></font></p>     <p><font face="Verdana" size="2"><b>Objetivo:</b> Determinar la prevalencia y factores asociados de infecci&oacute;n por VIH en presos de Espa&ntilde;a.</font>    <br><font face="Verdana" size="2"><b>Material y m&eacute;todo:</b> Estudio observacional y transversal (junio 2008). Se determin&oacute; para 62.000 internos una &quot;n&quot; de 364 (variabilidad 5%, error &alpha; 5% y correcci&oacute;n 10% por posibles p&eacute;rdidas). Se seleccionaron aleatoriamente 18 prisiones y 21 internos/prisi&oacute;n. Medida de frecuencia: prevalencia. Magnitud de la asociaci&oacute;n: <i>odds ratio</i> de prevalencia (ORp) con IC del 95%. Nivel de significaci&oacute;n estad&iacute;stica p&lt; 0,05.    <br><b>Resultados:</b> Se estudiaron 371 presos (91,6% varones, 66,9% &le; 40 a&ntilde;os, 60,6% espa&ntilde;ol, 23,5% UDI y 71,2% encarcelado&lt; 5 a&ntilde;os). La prevalencia de VIH fue del 10,8% (IC: 7,5-14). El 85% estaba coinfectado con VHC, el 12,5% con VHB y VHC y el 63,2% con el <i>M. tuberculosis</i>, que representa una proporci&oacute;n para la poblaci&oacute;n penitenciaria del 9,2%, 1,3% y 6,7%, respectivamente. Se asoci&oacute; ser VIH+ a tener &gt;40 a&ntilde;os (p&lt;0,01); estar preso &gt;5 a&ntilde;os (p&lt;0,001); no ser &aacute;rabe (p&lt;0.01); ser espa&ntilde;ol (p&lt;0,001); ser UDI (p&lt;0,001); estar coinfectado con VHC (p&lt;0,001) y estar coinfectado con VHB (p&lt;0,001&#093;. El an&aacute;lisis multivariante confirm&oacute; la asociaci&oacute;n con: a) tener &ge;40 a&ntilde;os &#091;OR= 2,66 (IC:1,16-6,07), b) ser UDI &#091;OR=28,08 (IC:9,61-81,99); c) estar infectado por el VHC &#091;OR=6,96 (IC:1,90-25,39)&#093;; y d) estar infectado por el VHB &#091;OR= 13,52 (IC=1,76-103,82)&#093;.    <br><b>Conclusi&oacute;n:</b> La prevalencia de infecci&oacute;n por VIH en presos de Espa&ntilde;a es del 10,8%. Los infectados suelen ser UDI y mayores de 40 a&ntilde;os. El 85% est&aacute; coinfectado con el VHC y el 12,5% con el VHB y VHC.</font></p>     <p><font face="Verdana" size="2"><b>Palabras clave:</b> Prisiones; Epidemiolog&iacute;a; Prevalencia; Anticuerpos anti-VIH; Serodiagn&oacute;stico del sida; Prisioneros; VIH.</font></p> <hr size="1">     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2"><b>ABSTRACT</b></font></p>     <p><font face="Verdana" size="2"><b>Objective:</b> To determine the prevalence and associated factors of HIV infection amongst inmates in Spain.    <br><b>Material and Methods:</b> Observational and transversal study (June 2008). For 62,000 inmates an &quot;n&quot; of 364 was determined (5% variability, error correction &alpha; 5% and 10% missing). 18 prisons were randomly selected and 21 inmates/prison. Frequency measurement: prevalence. Magnitude of the association: odds ratio of prevalence (ORP) with 95%. Statistical significance p&lt;0.05.    <br><b>Results:</b> 371 prisoners were studied (91.6% male, 66.9% &le; 40 years, 60.6% Spanish, 23.5% IDU and 71.2% incarcerated &lt;5 years). HIV prevalence was 10.8% (CI: 7.5 to 14). 85% were co-infected with HCV, 12.5% with HBV and HCV and 63.2% with M. tuberculosis. This represents a proportion to the prison population of 9.2%, 1.3% and 6.7% respectively. HIV infection was associated with: a) &gt; 40 years (p &lt;0.01), b) imprisoned&gt; 5 years (p &lt;0.001), c) non-Arab (p &lt;0.01), d) Spanish nationality (p &lt;0.001), e) IDUs (p &lt;0.001), f) co-infected with HCV (p &lt;0.001), and g) co-infected with HBV (p &lt;0.001&#093;. Multivariate analysis confirmed the association: a) &ge; 40 years &#091;OR = 2.66 (CI : 1.16-6.07), b) IDU &#091;OR = 28.08 (IC-9.61-81.99), c) infected with HCV &#091;OR = 6.96 (CI :1.90-25.39)&#093;, and d) infected with HBV &#091;OR = 13.52 (CI = 1.76-103.82).    <br><b>Conclusion:</b> The prevalence of HIV infection among prisoners in Spain is 10.8%. Those that are infected are usually IDUs and over 40 years. 85% are co-infected with HCV and 12.5% with HBV and HCV.</font></p>     <p><font face="Verdana" size="2"><b>Keywords:</b> Prisons; Epidemiology; Prevalence; HIV Antibodies; Aids Serodiagnosis; Prisoners; HIV.</font></p> <hr size="1">     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Introducción</b></font></p>     <p><font face="Verdana" size="2">En Espa&ntilde;a hay aproximadamente 130.000 infectados por el VIH<sup>1</sup>, lo que representa una prevalencia de infecci&oacute;n de 2,7-3,7 casos por 1.000 habitantes, y se han notificado casi 80.000 casos de SIDA hasta el 30 de septiembre de 2010<sup>2</sup>. En el a&ntilde;o 2009 se diagnosticaron 2.264 nuevos casos de infecci&oacute;n, que suponen una tasa de 79,3/mill&oacute;n de habitantes<sup>3</sup>, similar a la de pa&iacute;ses de nuestro entorno, como Francia, B&eacute;lgica o Irlanda, e inferior a las de Estonia, Letonia, Portugal y el Reino Unido, pero superior a la media del conjunto de pa&iacute;ses de la Uni&oacute;n Europea<sup>4</sup>.</font></p>     <p><font face="Verdana" size="2">En los nuevos diagn&oacute;sticos de infecci&oacute;n por el VIH, la transmisi&oacute;n en hombres que mantienen relaciones sexuales con hombres es la m&aacute;s frecuente, 42,5%, seguida de la heterosexual, 34,5%, y finalmente la producida en usuarios de drogas inyectadas (UDI), 8,1%. Aunque en Espa&ntilde;a, en los primeros a&ntilde;os de la epidemia la infecci&oacute;n por el VIH afect&oacute; mayoritariamente a los UDI, la disminuci&oacute;n de nuevos casos en este colectivo viene ocurriendo desde la d&eacute;cada de los noventa<sup>5,6</sup>, probablemente por el menor uso de la v&iacute;a endovenosa en los heroin&oacute;manos, por la extensi&oacute;n de los programas de tratamiento con metadona, por las campa&ntilde;as educativas, y por la menor incorporaci&oacute;n de j&oacute;venes al consumo de drogas inyectadas. La reducci&oacute;n de la transmisi&oacute;n del VIH en los UDI tambi&eacute;n se ha observado en el colectivo de los presos<sup>7</sup>, que ha presentado importantes cambios sociol&oacute;gicos en los &uacute;ltimos a&ntilde;os: modificaci&oacute;n del patr&oacute;n de consumo en drogodependientes espa&ntilde;oles<sup>8,9</sup>, con menor uso de la v&iacute;a parenteral, y aumento de reclusos inmigrantes, que son generalmente menos UDI<sup>9</sup>. Es muy posible que estos cambios sociol&oacute;gicos hayan supuesto importantes modificaciones en la prevalencia de infecci&oacute;n por el VIH en poblaci&oacute;n penitenciaria. Por ello, el objetivo de nuestro trabajo ha sido estimar la prevalencia actual, as&iacute; como los factores asociados a la infecci&oacute;n por el VIH en los presos de Espa&ntilde;a.</font></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Material y métodos</b></font></p>     <p><font face="Verdana" size="2">Subestudio del proyecto PREVALHEP, dise&ntilde;ado para medir la prevalencia de infecci&oacute;n por virus hepatotropos, VIH y <i>M. tuberculosis</i> en los internados en prisiones espa&ntilde;olas. Se trata de un estudio observacional, de tipo transversal, realizado en junio de 2008. La fuente de datos fueron las historias cl&iacute;nicas de los internos incluidos, ya que a toda persona que ingresa en una prisi&oacute;n espa&ntilde;ola se le ofrece la realizaci&oacute;n voluntaria de estudios serol&oacute;gicos de &eacute;sta y otras infecciones.</font></p>     <p><font face="Verdana" size="2"><b>Tama&ntilde;o de la muestra.</b> Se consider&oacute; un total de internos en las prisiones espa&ntilde;olas de 62.000 y una prevalencia m&aacute;xima de infecci&oacute;n por el VIH del 30%. Se determin&oacute; una &quot;n&quot; m&iacute;nima de 364 presos asumiendo una variabilidad del 5%, un error alfa del 5% y una correcci&oacute;n del 10% para compensar posibles p&eacute;rdidas.</font></p>     <p><font face="Verdana" size="2"><b>M&eacute;todo de muestreo.</b> Se realiz&oacute; un muestreo por conglomerado biet&aacute;pico con probabilidades proporcionales a los tama&ntilde;os de las unidades de primera etapa (n<sup>o</sup> de internos por centro). El n&uacute;mero de centros seleccionados fue de 18. La segunda etapa consisti&oacute; en la selecci&oacute;n aleatoria de 21 internos por centro incluido. Los centros penitenciarios seleccionados fueron: Huelva, C&oacute;rdoba, Almer&iacute;a, Sevilla, Villabona (Asturias), Castell&oacute;n, Le&oacute;n, El Dueso (Cantabria), Ponent (L&eacute;rida), Topas (Salamanca), Brians (Barcelona), C&aacute;ceres, Teixeiro (La Coru&ntilde;a), Madrid II, Madrid VI, Murcia, Valencia y Fontcalent (Alicante 1).</font></p>     <p><font face="Verdana" size="2"><b>Variables estudiadas.</b> Se recogieron y analizaron: a) variables sociodemogr&aacute;ficas (edad, sexo, raza, nacionalidad y uso de drogas intravenosas -UDI-); b) relacionadas con la estancia en prisi&oacute;n (tiempo total en prisi&oacute;n y a&ntilde;o del &uacute;ltimo ingreso): y c) cl&iacute;nico-serol&oacute;gicas (serolog&iacute;as del VIH, VHB y VHC, resultados de la intradermorreacci&oacute;n de Mantoux -IDRM-, y existencia o no de enfermedad tuberculosa previa).</font></p>     <p><font face="Verdana" size="2"><b>An&aacute;lisis Estad&iacute;stico:</b> En el estudio univariante se realiz&oacute; una descripci&oacute;n de las variables de la muestra. La medida de frecuencia utilizada fue la prevalencia. Para describir las variables cuantitativas se utiliz&oacute; la media con su desviaci&oacute;n est&aacute;ndar (DE) o mediana y percentiles. La comparaci&oacute;n de medias entre grupos se efectu&oacute; mediante la prueba de la t de Student. El an&aacute;lisis de asociaci&oacute;n entre variables cualitativas se realiz&oacute; con la prueba de la chi cuadrado (N<sup>2</sup>). Para cuantificar la magnitud de la asociaci&oacute;n se calcul&oacute; la <i>odds ratio</i> de prevalencia (ORp) cruda con sus intervalos de confianza del 95% (IC 95%) y con las variables que ten&iacute;an ambos extremos del IC 95% por encima o por debajo de la unidad se calcul&oacute; la ORp ajustada mediante un modelo de regresi&oacute;n log&iacute;stica m&uacute;ltiple. El nivel de significaci&oacute;n estad&iacute;stica en los contrastes de hip&oacute;tesis fue de p &lt; 0,05. El programa estad&iacute;stico utilizado fue el SPSS v.10.0.</font></p>     <p><font face="Verdana" size="2"><b>Consideraciones &eacute;ticas y legales:</b> Se inform&oacute; a los pacientes a incluir y se solicit&oacute; su consentimiento para utilizar los datos, dej&aacute;ndose constancia de ello en la historia cl&iacute;nica. Se solicit&oacute; autorizaci&oacute;n administrativa a la Secretar&iacute;a General de Instituciones Penitenciarias del Gobierno de Espa&ntilde;a y a la Secretaria de Serveis Penitenciaris, Rehabilitaci&oacute; i Just&iacute;cia Juvenil de la Generalitat de Catalu&ntilde;a. El estudio fue evaluado por el Comit&eacute; &Eacute;tico y de Investigaci&oacute;n Cl&iacute;nica de la <i>Fundaci&oacute; Gol i Gorina</i> de Barcelona.</font></p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana"><b>Resultados</b></font></p>     ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">Se seleccionaron 378 presos, de los que se estudiaron a 371 (98,1%). Hubo un menor estudio en los presos de etnia &aacute;rabe que en los de otras razas o etnias (98,8% vs 94,7%) con diferencias estad&iacute;sticamente significativas (p=0,03).</font></p>     <p><font face="Verdana" size="2">La edad media de la muestra seleccionada era de 35,7 a&ntilde;os (DS +/- 10,3) y el tiempo medio de encarcelamiento de 3,6 a&ntilde;os (DS +/- 4,4). La mayor&iacute;a eran hombres (91,6%), j&oacute;venes (el 66,9% &le; 40 a&ntilde;os) y espa&ntilde;oles (60,6%). De los extranjeros, eran mayoritarios los de origen norteafricano (35,2%) y los de origen latinoamericano (32,4%), mientras que el resto (n= 46; 32,4%) proced&iacute;an de otras &aacute;reas geogr&aacute;ficas. Por pa&iacute;ses, los extranjeros m&aacute;s numerosos eran los marroqu&iacute;es (n=46; 32,4%). El 23,5% ten&iacute;a antecedente de UDI y el 71,2% llevaba preso un tiempo inferior a 5 a&ntilde;os. Las caracter&iacute;sticas sociodemogr&aacute;ficas de la poblaci&oacute;n analizada se presentan de forma m&aacute;s detallada en la <a href="#t1">tabla 1</a>.</font></p>     <p align="center"><a name="t1"><img src="/img/revistas/sanipe/v14n1/04_original3_t1.gif" width="400" height="586"></a></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2">De los estudiados, 40 (10,8%; IC: 7,5-14) estaban infectados por el VIH, 84 (22,7%) por el VHC, 9 (2,6%) por el VHB (HbsAg +) y 173 (50,5%) por el <i>M. tuberculosis</i>.</font></p>     <p><font face="Verdana" size="2">El perfil de los infectados por el VIH se correspondi&oacute; con el de un paciente joven (media de 39,2 a&ntilde;os), var&oacute;n (95%), espa&ntilde;ol (90%), caucasiano (87,5%) y con antecedente UDI (85%), con un tiempo de infecci&oacute;n por el VIH conocida de 8 a&ntilde;os (DS+/- 5,2) y una estancia en prisi&oacute;n de 7,7 a&ntilde;os (DS +/- 6,8). El 85% de los infectados por el VIH estaba coinfectado con el VHC, el 12,5% conjuntamente con el VHB y el VHC, y el 63,2% con el <i>M. tuberculosis</i> lo que representa una proporci&oacute;n para el conjunto de la poblaci&oacute;n penitenciaria del 9,2%, 1,3% y 6,7%, respectivamente (<a href="#f1">figura 1</a>). La mediana de linfocitos CD4 era de 473/mm<sup>3</sup> (+/- 254) y el 10,3% cumpl&iacute;a criterios diagn&oacute;sticos de SIDA (estadio C3 de los CDC).</font></p>     <p align="center"><a name="f1"><img src="/img/revistas/sanipe/v14n1/04_original3_f1.gif" width="462" height="415"></a></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2">El an&aacute;lisis bivariante asoci&oacute; el estar infectado por el VIH (<a target="_blank" href="/img/revistas/sanipe/v14n1/04_original3_t2.gif">tabla 2</a>) con: a) el tener m&aacute;s edad (39,2 vs 35,4 a&ntilde;os en los no infectados; p=0,002); b) el llevar m&aacute;s tiempo encarcelado (7,7 vs 3,1 a&ntilde;os en los no infectados; p&lt;0,001); c) el no ser &aacute;rabe (0% de infectados de esta etnia vs 16,3% de los no infectados; p=0,006); d) el ser espa&ntilde;ol (90% de los infectados vs 57,1% de los no infectados; p&lt;0,001); y e) el ser UDI (85% vs 16,1% en no infectados; p&lt;0,001). El an&aacute;lisis multivariante (<a href="#t3">tabla 3)</a> confirm&oacute; la asociaci&oacute;n con: a) tener &ge;40 a&ntilde;os &#091;OR= 2,66 (IC:1,16-6,07) p=0,02&#093;; b) ser UDI &#091;OR=28,08 (IC:9,61-81,99) p&lt;0,001&#093;; estar infectado por el VHC &#091;OR=6,96 (IC:1,90-25,39)&#093;; y d) estar infectado por el VHB &#091;OR= 13,52 (IC=1,76-103,82)&#093;.</font></p>     <p align="center"><a name="t3"><img src="/img/revistas/sanipe/v14n1/04_original3_t3.gif" width="398" height="314"></a></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Discusión</b></font></p>     <p><font face="Verdana" size="2">La principal limitaci&oacute;n de este estudio es la que se atribuye a los estudios de prevalencia, en cuanto dan una visi&oacute;n est&aacute;tica de la magnitud del problema; es decir, circunscrita al momento en que se hace la recogida de informaci&oacute;n. Sin embargo, el fen&oacute;meno es din&aacute;mico y por ello se recomienda realizar estudios de forma peri&oacute;dica, al objeto de detectar precozmente los cambios de tendencia. De hecho, la prevalencia de infecci&oacute;n por VIH en los presos de Espa&ntilde;a ha pasado en los &uacute;ltimos 20 a&ntilde;os del 40%<sup>11</sup> al 10,8% observado en este trabajo, con disminuciones progresivas durante este intervalo de tiempo<sup>12-14</sup>. Tambi&eacute;n ha habido importantes reducciones de esta prevalencia en los presos de Italia<sup>15</sup> y en los de Estados Unidos (USA)<sup>16</sup>. A pesar del espectacular descenso, la tasa de infecci&oacute;n por VIH en los reclusos de Espa&ntilde;a es a&uacute;n muy superior a la poblaci&oacute;n penitenciaria de otros pa&iacute;ses desarrollados como Canad&aacute; (0,9-2,3%)<sup>17,18</sup>, Australia (&lt;1%)<sup>19</sup>, USA (0,3%-8,5%)<sup>20,21</sup>, la Uni&oacute;n Europea -UE- (1% en no consumidores y 4% en consumidores de drogas<sup>22</sup> o la de pa&iacute;ses espec&iacute;ficos de la UE como Finlandia (0,7-1%)<sup>23</sup>, Portugal (6%)<sup>24</sup>, Grecia (&lt;1%)<sup>25</sup>, Italia (7,5%)<sup>26</sup>, Irlanda (&lt;2%)<sup>27</sup> Dinamarca (0%)<sup>28</sup> o Gran Breta&ntilde;a (1,7%-4,5%)<sup>29,30</sup>. La prevalencia de infecci&oacute;n por VIH en presos de Espa&ntilde;a tambi&eacute;n es superior a la de los reclusos de pa&iacute;ses no miembros de la UE como Eslovaquia (0%)<sup>31</sup> o Croacia (0,15%)<sup>32</sup> e incluso supera a la de algunos pa&iacute;ses en v&iacute;a de desarrollo (PVD) como Indonesia (7,2%)<sup>33</sup>, L&iacute;bano (0,17%)<sup>34</sup>, Pakist&aacute;n (&lt;2%)<sup>35</sup>, Marruecos (2%)<sup>36</sup>, Afganist&aacute;n (1,8%)<sup>37</sup>, Belice (4%)<sup>38</sup> o la India (&lt;2%)<sup>39</sup>. S&oacute;lo se observan prevalencias similares o superiores a las citadas en nuestro pa&iacute;s cuando se da alguna de las siguientes circunstancias: a) cuando los centros penitenciarios acogen, al igual que en Espa&ntilde;a, una alta proporci&oacute;n de presos UDI, como ocurre en algunas prisiones de Rusia<sup>40</sup>, de Italia<sup>41</sup>, de Francia<sup>42</sup>, de Tailandia<sup>43</sup> o de Brasil<sup>44</sup>; b) cuando la poblaci&oacute;n presenta alta incidencia de enfermedades de transmisi&oacute;n sexual, como es el caso de alguna prisi&oacute;n brasile&ntilde;a con gran porcentaje de mujeres que ejerc&iacute;an la prostituci&oacute;n<sup>44,45</sup>; y c) cuando la prisi&oacute;n est&aacute; ubicada en un pa&iacute;s del continente africano subsahariano, como Nigeria<sup>46</sup>, Ghana<sup>47</sup>, Malawi<sup>48</sup> o Zambia<sup>49</sup>, que tiene elevadas tasas de infecci&oacute;n por el VIH en la poblaci&oacute;n general. Como ejemplo de esta &uacute;ltima situaci&oacute;n puede mencionarse el estudio de Adjei et al<sup>50</sup> en el que la prevalencia de VIH, VHC y s&iacute;filis en los funcionarios de prisiones de Ghana era del 4,9%, 18,7% y 7,9%, respectivamente.</font></p>     <p><font face="Verdana" size="2">Excepto en los reclusos de PVD, donde hay mayor representaci&oacute;n de infectados por v&iacute;a sexual, en pa&iacute;ses desarrollados la mayor&iacute;a de los presos infectados es, o ha sido antes, UDI. En este grupo es infrecuente que la abstinencia se mantenga permanentemente aun dentro de prisi&oacute;n. Por ello, son muchos los estudios que citan tanto consumos en la c&aacute;rcel<sup>30,43,51-53</sup>, que algunos refieren ocurre hasta en el 60% de consumidores<sup>53</sup>, como seroconversiones ocurridas en prisi&oacute;n<sup>54-59</sup>. En nuestro estudio, el 90% de los infectados era espa&ntilde;ol -m&aacute;s consumidor que el preso extranjero<sup>9</sup>-, el 85% era UDI y s&oacute;lo el 16,1% de los que alguna vez fueron UDI no hab&iacute;a adquirido la infecci&oacute;n. Adem&aacute;s, la mayor&iacute;a ten&iacute;a m&aacute;s de 40 a&ntilde;os y se sab&iacute;a infectado desde 8 a&ntilde;os antes, pero es posible que un porcentaje relevante estuviera infectado a&ntilde;os antes de saberlo. Estos datos parecen sugerir, como ya se ha citado, que hay cada vez una menor incorporaci&oacute;n de j&oacute;venes al consumo de drogas inyectadas y tambi&eacute;n que las infecciones en el grupo UDI se han reducido considerablemente<sup>5,6</sup>.</font></p>     <p><font face="Verdana" size="2">Es de resaltar que el 85% estaba coinfectado con el VHC y el 12,5% conjuntamente con VHB y VHC, ya que estos virus se transmiten de forma eficiente por v&iacute;a parenteral. Dada la edad de los afectados y el tiempo de UDI, probablemente muchos adquirieron estas infecciones hace tiempo y, por consiguiente, ser&iacute;a previsible en estos casos un incremento de enfermedades hep&aacute;ticas en los pr&oacute;ximos a&ntilde;os<sup>60</sup>. Esta situaci&oacute;n aconseja mantener los programas de reducci&oacute;n de da&ntilde;os, incluyendo en la oferta los programas de intercambio de jeringas, cada vez m&aacute;s extendidos en Espa&ntilde;a<sup>61</sup> y en otros pa&iacute;ses<sup>62,63</sup>, para reducir la transmisi&oacute;n parenteral del VIH, VHC y VHB entre los presos consumidores de drogas, as&iacute; como garantizar el tratamiento de la hepatitis C sin dilaciones innecesarias en los internados que lo precisen.</font></p>     <p><font face="Verdana" size="2">Es de resaltar tambi&eacute;n la alta tasa observada (50,8%) de infectados por  <i>M tuberculosis</i> y de coinfecci&oacute;n VIH/<i>M. tuberculosis</i>; esta &uacute;ltima ha disminuido desde el 20,1% en alg&uacute;n estudio previo<sup>64</sup> hasta el 6,7% actual, pero contin&uacute;a siendo muy alta.</font></p>     <p><font face="Verdana" size="2">Las prisiones finalmente pueden jugar un papel importante -epidemiol&oacute;gico, econ&oacute;mico, cl&iacute;nico y terap&eacute;utico- mediante la identificaci&oacute;n de individuos infectados por VIH sin diagnosticar. Se calcula que en la UE este grupo puede representar el 30%<sup>65</sup> de todos los infectados. Las recomendaciones del Centro Europeo para el Control de Enfermedades (ECDC)<sup>66</sup> consideran a la Sanidad Penitenciaria un elemento esencial de los programas nacionales dirigidos a expandir la prueba del VIH y reducir el diagn&oacute;stico tard&iacute;o. En las prisiones de Espa&ntilde;a la serolog&iacute;a VIH se oferta desde finales de los a&ntilde;os ochenta, de forma gratuita, voluntaria y confidencial, a todos los ingresados. Procede, por consiguiente, no bajar la guardia y continuar recomendando un completo estudio de todos los ingresados, con especial dedicaci&oacute;n a los mayores de 40 a&ntilde;os, a los UDI y a los infectados por VHB y/o por VHC como los grupos m&aacute;s vulnerables de haber adquirido el VIH en los internados de prisi&oacute;n.</font></p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><b>Referencias bibliográficas</b></font></p>     <!-- ref --><p><font face="Verdana" size="2">1. WHO. Global report: UNAIDS report on the global AIDS epidemic 2010  (Internet). Geneva: WHO; 2010. (cited 2011 Apr 10). 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<body><![CDATA[<!-- ref --><p><font face="Verdana" size="2">50. Adjei AA, Armah HB, Gbagbo F, Ampofo WK, Boamah I, Adu-Gyamfi C, et al. Correlates of HIV, HBV, HCV and syphilis infections among prison inmates and officers in Ghana: A national multicenter study. BMC Infect Dis. 2008; 8: 33.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801195&pid=S2013-6463201200010000400050&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">51. Bird AG, Gore SM, Cameron S, Ross AJ, Goldberg DJ. Anonymous HIV surveillance with risk factor elicitation at Scotland's largest prison, Barlinnie. AIDS. 1995; 9: 801-8.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801197&pid=S2013-6463201200010000400051&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">52. Kallas EG, Varella D, Ceneviva AC, Castelo A. HIV Seroprevalence and Risk Factors in a Brazilian Prison. Braz J Infect Dis. 1998; 2: 197-204.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801199&pid=S2013-6463201200010000400052&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">53. Koulierakis G, Gnardellis C, Agrafiotis D, Power KG. HIV risk behaviour correlates among injecting drug users in Greek prisons. Addiction. 2000; 95: 1207-16.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801201&pid=S2013-6463201200010000400053&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">54. Miller ER, Bi P, Ryan P. Hepatitis C virus infection in South Australian prisonenrs: seroprevalence, seroconverrsion and risk factors. Int J Infect Dis. 2009; 13: 2001-8.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801203&pid=S2013-6463201200010000400054&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    ]]></body>
<body><![CDATA[<!-- ref --><p><font face="Verdana" size="2">55. Centres for Disease Control and Prevenntion (CDC). HIV transmission among male inmates in a state prison system--Georgia, 1992-2005. MMWR Morb Mortal Wkly Rep. 2006; 55: 421-6.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801205&pid=S2013-6463201200010000400055&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">56. Jafa K, McElroy P, Fitzpatrick L, Borkowf CB, Macgowan R, Margolis A, et al. HIV transmission in a state prison system, 1988-2005. PLoS One. 2009; 4: e5416.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801207&pid=S2013-6463201200010000400056&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">57. Jahani MR, Kheirandish P, Hosseini M, Shirzad H, Seyedalinaghi SA, Karami N, et al. HIV seroconversion among injection drug users in detention, Tehran, Iran. AIDS. 2009; 23: 538-40.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801209&pid=S2013-6463201200010000400057&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">58. Testa AC, Weilandt C, Ncube F, Gill ON. HIV transmission in part of the US prison system: implications for Europe. Euro Surveill. 2006; 11: E060525.2.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801211&pid=S2013-6463201200010000400058&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">59. Krebs CP, Simmons M. Intraprison HIV transmission: an assessment of whether it occurs, how it occurs, and who is at risk. AIDS Educ Prev. 2002; 14(5 Suppl B): 53-64.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801213&pid=S2013-6463201200010000400059&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    ]]></body>
<body><![CDATA[<!-- ref --><p><font face="Verdana" size="2">60. Murcia J, Portilla J, Bedia M, Palaz&oacute;n JM, S&aacute;nchez-Pay&aacute; J, Saiz de la Hoya P, et al. Chronic hepatitis C virus infection and associated liver disease among the inmates of a Spanish prison. Enferm Infecc Microbiol Clin. 2009; 27: 206-12.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801215&pid=S2013-6463201200010000400060&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">61. Barrios LF. Origen y modelos de Programa de Intercambio de Jeringuillas (PIJ) en prisi&oacute;n. Rev Esp Sanid Penit. 2003; 5: 21-9.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801217&pid=S2013-6463201200010000400061&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">62. Orsi MM, Brochu S. The place of syringe exchange programs in reducing harm in Canadian prisoners. Can J Public Health. 2009; 100: 29-31.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801219&pid=S2013-6463201200010000400062&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">63. Stark K, Herrm ann U, Ehrhardt S, Bienzle U. A syringe exchange programme in prison as prevention strategy against HIV infection and hepatitis B and C in Berlin, Germany. Epidemiol Infect. 2006; 134: 814-9.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801221&pid=S2013-6463201200010000400063&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">64. Mart&iacute;n V, Cayl&agrave; JA, Bolea A, Castilla J. Mycobacterium tuberculosis and human immunodeficiency virus co-infection in intravenous drug users on admission to prison. Int J Tuberc Lung Dis. 2000; 4: 41-6.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801223&pid=S2013-6463201200010000400064&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    ]]></body>
<body><![CDATA[<!-- ref --><p><font face="Verdana" size="2">65. Hamers F, Phillips A. Diagnosed and undiagnosed HIV-infected populations in Europe. HIV Medicine. 2008; 9 (Supl.2): 6-12.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801225&pid=S2013-6463201200010000400065&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>    <!-- ref --><p><font face="Verdana" size="2">66. European Centre for Disease Prevention and Control. HIV Testing: increase uptake and effectiveness in the European Union. Stockholm: ECDC; 2010.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=5801227&pid=S2013-6463201200010000400066&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font face="Verdana" size="2"><a href="#top"><img border="0" src="/img/revistas/sanipe/v14n1/seta.gif"></a><b><a name="bajo"></a>Dirección para correspondencia:</b>    <br>Dr. Andr&eacute;s Marco    <br>Programa VIH/SIDA    <br>Centro Penitenciario de Hombres    ]]></body>
<body><![CDATA[<br>C/Entenza, 155. Barcelona 08029    <br><a href="mailto:andres.marco.m@gmail.com">andres.marco.m@gmail.com</a></font></p>     <p><font size="2" face="Verdana">Texto recibido: 10/07/2011    <br>Texto aceptado: 13/01/2012</font></p>      ]]></body><back>
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