1134-8046 1134-8046 S1134-80462017000600356 10.20986/resed.2016.3519/2016 España 00 12 2017 00 12 2017 24 6 356 358 2012 13 4 4 489-97 2012 51 281-5 2014 17 6 6 E709-17 2012 13 4 4 489-97 2015 156 12 12 2585-94