2448-8372 2448-8372 S2448-83722018000100167 10.31836/lh.18.6329 Mexico 00 00 2018 00 00 2018 18 167 199

1989 2014 2009 2001 2004 2001 1961 III 2006 54-90 2004 2008 17 34 34 92-124 2003