2007-0705 2007-0705 S2007-07052017000200065 10.21640/ns.v9i19.886 Mexico Mexico 00 00 2017 00 00 2017 9 19 65 82

2004 7 827-33 2001 1 9-11 2014 8 120-5 2014 4 3345-9 2013 3 27-9 2013 36 381-6 2013 4 61-8 2013 1 136-41 2014 132 100-7 2000 21 43-7 1955 50 1096-121 2011 17 417-23 2015 36 117-9 2012 2 247-55 2014 24 1743-51 1995 46 147-51 1962 2 176-7 2005 74 391-4 2007 3 38-41 2013 13 696-704 2002 52 311-23 2012 35 187-7380 2016 7 339-51 2013 4 665-71 2007 32 566-71 2016 6 328-32 2015 49 24-31 2015 9 111-9 2008 40 649-65 2011 11 268-74 Statistical Analysis System (SAS) 2006 1686 2012 2 63-7 2011 10 1-10