1982-7806 1982-7806 S1982-78062017000100286 10.14393/che-V16n1-2017-17 Brazil 00 04 2017 00 04 2017 16 1 286 304

13 3 3 147-77 3 5 5 147-64 2 4 4 265-304 13 1 1 65-104