1982-7806 1982-7806 S1982-78062017000100155 10.14393/che-v16n1-2017-11 Brazil 00 04 2017 00 04 2017 16 1 155 179

4 5 5 137-46 13 29 29 8 8 77-95 9 8 1-2 1-2 1 1 307-18