2238-0094 2238-0094 S2238-00942015000100201 10.4025/rbhe.v15i1.630 Brazil Brazil Brazil Brazil 00 04 2015 00 04 2015 15 1 201 234

24 69 69 6-30 2 2 177-231 11 3 3 63-97 1 1 9-43 23 3 3 21-31