1983-2117 1983-2117 S1983-21172013000100049 10.1590/1983-21172013150104 Brazil Brazil 00 01 2013 00 01 2013 15 1 49 65

21 4 4 26 2 2 179-84 15 1 1 61-84 19 19 25 1 1 107-32 3 ed. 2008 19 3 3 90 89-110 14 1 1 4 241-168 24 235-56 43 1 1 63-95