2178-4612 2178-4612 S2178-46122016000300628 10.18226/21784612.v21.n3.09 Brazil Brazil Brazil 00 12 2016 00 12 2016 21 3 628 644

24 24 5-15 26 93 93 1.341-1.363 151 13 13 71-4 16 48 48 769-92 45 720-50