1517-9702 1517-9702 S1517-97022017000200499 10.1590/s1517-9702201605141169 Brazil Brazil 00 06 2017 00 06 2017 43 2 499 514

17 32 32 151-70 11 32 32 258-371 157-68 111-30 65-92 9-18 1 1 26-32 13-38 3 5 6 34 34 5-15