1870-4670 1870-4670 S1870-46702018000200097 10.22201/iij.24487899e.2018.27.12531 Mexico 00 12 2018 00 12 2018 27 97 129

1997 2010 2013 1961 Instituto Mexicano del Seguro Social 1979 2018 37 37 1979 1986 2012 2015 14a 1958