0185-2523 0185-2523 S0185-25232017000200001 10.1016/j.ehn.2017.05.003 Mexico Mexico 00 12 2017 00 12 2017 57 1 5 1977 31 V-VIII-3 1977 32 1982 XXXII 3 3 299-348 1982 XXXI 4 4 471-543 1983 XXXIII 2 2 318-36 1985 1985 2 1986 XXXV 3 3 389-446 1988 1988 XXXVII 4 4 585-612 1988 XXXVIII 1 1 111-26 1989 1989 1991 1992 4 139-49 1993 I 107-23 1994 5 73-83 1994 170-80 2003 2003 2004