0212-1611 0212-1611 S0212-16112021000400877 10.20960/nh.03633 Chile Chile Chile Chile 00 08 2021 00 08 2021 38 4 877 878 1 2018 35 6 6 1366-71 2 2020 37 1 1 101-13 3 1989 4 1995 5 1992 6 1994 7 1986 8 1989 106 1 1 148-54 9 1999 5 10 2016