0185-3325 0185-3325 S0185-33252017000400165 10.17711/sm.0185-3325.2017.021 Mexico Mexico 00 08 2017 00 08 2017 40 4 165 170

2002 100 5 5 398-401 2009 9-64 2011 46 ^s1 ^s1 1 84-94 2013 2 2 2 65-111 Grupo Igia y colaboradores 1999 27-38 2000 23 3 3 20-8 Grupo Igia y colaboradores 1999 53-60 2001 236 236 49-79 1994 28 2 2 167-72 2003 25 6 6 27-34 2007 17-34 2008 31 5 5 403-8 1977 1978 95-108 2007 10 4 4 399-418 2008 19 5 5 375-87 2002 25 4 4 57-67 1984 7 1 1 13-8 2001 24 4 4 3-19 1978 41-57 1979 2015 38 6 6 427-32 2003 101-12 2014 37 3 3 225-31 1992 14 2 2 57-62 2000 13 62-4 1989 12 3 3 26-35 2002 25-53 2011 46 ^s1 ^s1 1 40-5 2012 35 6 6 447-57 2016 39 4 4 193-203