1519-3993 1519-3993 S1519-39932016000100045 10.5965/151939932112016057 Brazil Brazil Brazil 00 04 2016 00 04 2016 21 1 45 57

36 36 14 3 3 40 1 1 21 2 2 473-91 18 2 2 21 71 71 23-44 19 2 2