2238-0094 2238-0094 S2238-00942016000400241 10.4025/rbhe.v16i4.818 Brazil 00 12 2016 00 12 2016 16 4 241 271

86 86 5-14 146 42 42 351-67 19 62 62 13-30 137 39 39 597-619 19 39 39 1-18