1982-7806 1982-7806 S1982-78062017000100006 10.14393/che-V16n1-2017-2 Brazil 00 04 2017 00 04 2017 16 1 6 17

117 117 97-116 10 2 2 45-67 2-3 2-3 6-17 121 121 67-82 19 19 113-28 1 1 17-38 14 4 4 523-33 36 3 3 841-68 23 45 45 37-70