1027-152X 1027-152X S1027-152X2017000300175 10.5154/r.rchsh.2017.01.004 Mexico Mexico Mexico 00 12 2017 00 12 2017 23 3 175 187

1995 150 150 36-41 2004 94 2 2 154-62 2013 47 6 6 593-607 2010 11 2 2 227- 243 2007 1990 2007 56 5 5 836-42 2004 1981 87 2 2 65-8 1995 362 1995 72 1 1 35-49 2014 91 3 3 312-26 1990 80 1190-8 1985 28 531-4 1993 83 10 10 1087-92 1996 1-7 1996 39 4 4 551-9 1997 87 4 4 375-80 2007 91 7 7 909 1996 34 549-72 2011 10 6-17 1996 14 143-7 1995 85 6 6 669-76 2003 158 345-53 2006 96 12 12 1397-403 2001 91 9 9 882-90 2005 43 171-90 1987 1996 252 1-2 1-2 155-61 1997 87 9 9 973-80 2001 Italy 1991 21 2 2 341-5 2013 97 8 8 1112 1995 137-41 1994 78 9 9 911-6 1995 154-9 2011 47 5 5 403-9 2012 37 9 9 689-95 2006 4 341-4 2016 39 1 1 25-31 2016 Tampa, Florida, USA 1977 67 1051-6 1988 37 1 1 4-11 1992 22 2 2 306-9 Statistical Analysis System (SAS Institute) 2004 1990 53 1 1 75-88 2006 115 3 3 283-92