0123-5931 0123-5931 S0123-59312019000100279 10.15446/lthc.v21n1.74879 USA 00 06 2019 00 06 2019 21 1 279 295

1947 1965 13 13-6 1938 1986 1982 2011 I 1083-108 1985 IV 3-129 2001 2.1976-1988 1571-81 2006 1965 1987