2007-1132 2007-1132 S2007-11322016000500051 Mexico Mexico Mexico Mexico Mexico 00 10 2016 00 10 2016 7 37 51 63

1977 1961 59 420-6 2005 39 667-77 2006 46 171-1721 1994 67 23-34 2009 32 87-92 2005 2010 31 45-52 1974 20 2-16 2006 66-72 2000 2 39-45 1997 4 248-57 1999 1983 2003 2 2010 34 105-19 2004 28 37-51 1980 169-79 1989 1970 24 48-51 Statistical Analysis System Institute (SAS) 1999 2000 14 1-7 2007 1964 1976 1988