1665-899X 1665-899X S1665-899X2018000200311 10.21696/rcsl9162018779 Mexico 00 08 2018 00 08 2018 8 16 311 336

2001 1995 2001 2011 2001 115 30-44 1993 1985 75 2 2 228-32 1998 2007 1989 4 4 4 505-33 1963 1997 1985