2238-0094 2238-0094 S2238-00942015000100109 10.4025/rbhe.v15i1.621 Brazil Brazil Brazil 00 04 2015 00 04 2015 15 1 109 142

1 2 2 51-68 11 21 21 9-34 14 14 19-34 1 77 77 3-55