0036-3634 0036-3634 S0036-36342016000300366 10.21149/spm.v58i3.7896 México Mexico México 00 06 2016 00 06 2016 58 3 366 370

2006 6 91-9 2010 140 392-8 2007 7 775-86 2005 352 2325-36 2009 56 183-7 2013 26 404-12 1992 34 230-40 2004 140 391-8 1999 62 107-12 2002 90 19-30 2012 6 e1929 2010 36 S8-S11 2003 61 279-93 2013 7 e2177 2013 32 177-88 2012 54 1557-60 2011 53 24 2007 101 923-8 1987 25 1969-72 2008 15 1031-3 1992 108 77-85 World Health Organization 2006 45 2013 110 20871-7 2003 81 867-76 2010 5 e14188