2448-6531 2448-6531 S2448-65312021000300185 10.24201/hm.v71i1.4297 Mexico 00 09 2021 00 09 2021 71 1 185 202 1876 2 1986 2 1999 59-85 1996 11 109-21 1989 5 2 2 313-26