2238-0094 2238-0094 S2238-00942015000200133 10.4025/rbhe.v15i2.632 Brazil 00 05 2015 00 05 2015 15 2 133 158

66 66 4-11 2 138-38 1 339-39 3 1 56-8 6 20 20 1-11 2 37 37 209-26 9 2 2 200-13