1665-7063 1665-7063 S1665-70632016000300166 10.1016/j.reu.2016.05.003 Mexico 00 09 2016 00 09 2016 13 3 166 170

2015 16-9 2004 123 647-51 2005 494 -7 2011 19-24 2007 59 342-7 2006 160-71 2003 22 94-104 1995 1994 37 677-87 Secretaría de Salud 2009 2013 http://bit.ly/1O9eo1w 2010 11 1-9 2003 11 83 -96