2317-0972 2317-0972 S2317-09722016000300093 10.5965/0102-387Xv34n6820160106 Brazil Brazil 00 12 2016 00 12 2016 34 68 93 106

11 11 89-117 16 58 58 59-76 39 39 39-50 2 2 2 208-30 11 2 2 342-86