<?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>1699-695X</journal-id>
<journal-title><![CDATA[Revista Clínica de Medicina de Familia]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Clin Med Fam]]></abbrev-journal-title>
<issn>1699-695X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Española de Medicina de Familia y Comunitaria]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1699-695X2021000200015</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Principio de incertidumbre]]></article-title>
<article-title xml:lang="en"><![CDATA[Uncertainty principle]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carbajo Martín]]></surname>
<given-names><![CDATA[Laura]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A4"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lamarca Pinto]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Área de Gestión Sanitaria Norte de Huelva Servicio de Urgencias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Gerencia Emergencias Castilla y León  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Servicio Andaluz de Salud Servicio de Coordinación de Sistemas de Información ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af4">
<institution><![CDATA[,Sociedad Española de Medicina Familiar y Comunitaria Grupo de Urgencias y Atención Continuada ]]></institution>
<addr-line><![CDATA[Huelva ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Sociedad Española de Medicina Familiar y Comunitaria Grupo de Urgencias y Atención Continuada ]]></institution>
<addr-line><![CDATA[Valladolid ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>14</volume>
<numero>2</numero>
<fpage>112</fpage>
<lpage>113</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1699-695X2021000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1699-695X2021000200015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1699-695X2021000200015&amp;lng=en&amp;nrm=iso"></self-uri></article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="book">
<collab>Dirección General de Salud Pública, Calidad e Innovación</collab>
<source><![CDATA[Manejo en urgencias del COVID-19]]></source>
<year>2020</year>
<publisher-loc><![CDATA[Madrid ]]></publisher-loc>
<publisher-name><![CDATA[Ministerio de Sanidad]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="book">
<collab>Organización Panamericana de la Salud</collab>
<source><![CDATA[COVID 19 y la importancia de fortalecer los sistemas de información]]></source>
<year>2020</year>
<publisher-name><![CDATA[Organización Mundial de la Salud]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Buitrago Ramírez]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Ciurana Misol]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández Alonso]]></surname>
<given-names><![CDATA[MC]]></given-names>
</name>
<name>
<surname><![CDATA[Tizón]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pandemia de la COVID-19 y salud mental: reflexiones iniciales desde la atención primaria de salud española]]></article-title>
<source><![CDATA[Atención Primaria]]></source>
<year>2021</year>
<volume>53</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>89-101</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rosell Ortiz]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández del Valle]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Knox]]></surname>
<given-names><![CDATA[EC]]></given-names>
</name>
<name>
<surname><![CDATA[Jiménez Fábrega]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Navalpotro Pascual]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Mateo Rodríguez]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of the Covid-19 pandemic on out-of-hospital cardiac arrest. A Spanish nationwide prospective cohort study]]></article-title>
<source><![CDATA[Resuscitation]]></source>
<year>2020</year>
<volume>157</volume>
<page-range>230-40</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lim]]></surname>
<given-names><![CDATA[ZJ]]></given-names>
</name>
<name>
<surname><![CDATA[Ponnapa Reddy]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Afroz]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Billah]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Shekar]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Subramaniam]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Incidence and outcome of out-of-hospital cardiac arrests in the COVID-19 era: A systematic review and meta-analysis]]></article-title>
<source><![CDATA[Resuscitation]]></source>
<year>2020</year>
<volume>157</volume>
<page-range>248-58</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grunau]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Bal]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Scheuermeyer]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Guh]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Dainty]]></surname>
<given-names><![CDATA[KN]]></given-names>
</name>
<name>
<surname><![CDATA[Helmer]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bystanders are less willing to resuscitate out-of-hospital cardiac arrest victims during the COVID-19 pandemic]]></article-title>
<source><![CDATA[Resusc Plus]]></source>
<year>2020</year>
<volume>4</volume>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="book">
<collab>DG de Emergencias y Protección Civil</collab>
<source><![CDATA[Actuaciones del SAMUR durante la COVID-19]]></source>
<year>2020</year>
<publisher-name><![CDATA[Ayuntamiento de Madrid]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Suárez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rojas]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Criterios de diseño de un hospital de pandemias]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Danet Danet]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Psychological impact of COVID-19 pandemic in Western frontline healthcare professionals. A systematic review]]></article-title>
<source><![CDATA[Med Clin (Barc)]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Loayssa Lara]]></surname>
<given-names><![CDATA[JR]]></given-names>
</name>
<name>
<surname><![CDATA[Tandeter]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Incertidumbre y la toma de decisiones clínicas]]></article-title>
<source><![CDATA[Aten Primaria]]></source>
<year>2001</year>
<volume>28</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>560-4</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
