2178-4612 2178-4612 S2178-46122017000400436 10.18226/21784612.v22.n3.3 Brazil Brazil Brazil 00 12 2017 00 12 2017 22 3 436 457

34 3 3 245-62 27 5 5 381-86 16 2 2 3-11 23 3/4 3/4 613-23 63 3 3 557-69 31 1 1 46-53