2238-0094 2238-0094 S2238-00942015000300109 10.4025/rbhe.v15i3.631 Brazil Brazil 00 12 2015 00 12 2015 15 3 109 139

17 33 33 77-88 12 1 1 85-97 21 21 67-74 39 1 1 111-25 33 65-74 29 58 58 341-58 37 2 2 511-26 1 2 2 169-93 1 1 1 17-29 11 32 32 226-37