1982-7806 1982-7806 S1982-78062016000200634 10.14393/che-v15n2-2016-10 Brazil Brazil 00 08 2016 00 08 2016 15 2 634 657

19 19 134-42 1 1 09-43 25 2 2 85-6 19 48 48 20 52 52 74-87 24 1 1 126-40