0104-7043 0104-7043 S0104-70432016000200141 10.2015/01047043v25n462016141 Brazil Brazil 00 05 2016 00 05 2016 25 46 141 157

22 177-86 8 2 2 71-82 501 97-101 7 1 1 13-22 12 58 58 3-13 6 1 1 51-60 64 1 1 135-68