1982-7806 1982-7806 S1982-78062017000200554 10.14393/che-v16n2-2017-14 Brazil 00 08 2017 00 08 2017 16 2 554 574

12 1 1 11-32 14 1 1 37-45 16 16 15 3 3 167-84 2 2 127-43 89 89 26-61 52 52 436-54 11 3 (27 3 (27 13-45 23 45 45 37-70