2007-1132 2007-1132 S2007-11322018000500188 10.29298/rmcf.v9i49.162 Mexico Mexico Mexico México 00 10 2018 00 10 2018 9 49 188 212

1977 6 21-37 1998 41 2000 81 1477-83 2001 47 361-70 2004 29 408-17 1999 20 2 2 79-94 2015 121 1982 28 1 1 92-4 1979 500 1977 23 517-34 1994 296 2007 28 2 2 97-105 1977 892 2013 4 19 19 62-77 2011 11 3-16 1996 86 205-20 2004 203 88-99 88-99 2000 335 1983 7 191-206 2005 20 205-15 1990 71 1373-88 2017 4 2 2 113-26 1977 18 435-44 2013 34 2 2 201-9 1993 74 1020-32 2005 51 304-20 2013 57 1 1 37-47 2018 24 1 1 73-90 1933 46 7 7 627-38 2017 116 2009 33 2006 2003 169 2013 47 1 1 79-89 2017 8 12 12 465 Statistical Analysis System (SAS) 2011 1996 77 1698-715 1999 2008 255 2542-54 2000 44 2 2 87-95 1987 57 23-43 1984 14 167-225 1985 291-309 1963 14 107-29 1987 33 571-37 2005 35 1507-14