2178-4612 2178-4612 S2178-46122016000300538 10.18226/21784612.v21.n3.05 Brazil Brazil 00 12 2016 00 12 2016 21 3 538 560

10 3 3 413-20 1 1 1 9-28 26 93 93 1.273-1.288 56 4 4 26 93 93 1.183-1.194 19 1 1 121-26 9 1 1 36-41 8 2 2 427-51 11 32 32 226-37