2448-8372 2448-8372 S2448-83722015000100115 10.31836/lh.12.1780 Mexico 00 00 2015 00 00 2015 12 115 140

2005 406-28 2000 1993 2003 2009 2003 XXIV 93 93 18-49 2004 11 11 9-39 2009 1949