2238-0094 2238-0094 S2238-00942016000100023 10.4025/rbhe.v16i1.540 Brazil Brazil 00 04 2016 00 04 2016 16 1 23 50

21 01 01 13-37 20 20 25-50 12 221-42 11 71-81 9 135-58 16 389-407 15 216-38