0102-7735 0102-7735 S0102-77352014000100165 10.5238/2015v48i340008 Brazil 00 04 2014 00 04 2014 48 34 165 189

30 1 1 51-72 11 53 53 46-53 23 81 81 91-113 12 35 35 241-52 65 65 72-7 14 255-64