2317-0972 2317-0972 S2317-09722016000200069 10.5965/0102-387Xv34n672016082 Brazil 00 08 2016 00 08 2016 34 67 69 82

29 56 56 27-35 12 2 2 1-19 12 12 1-16 8 21 21 201-14 52 2 2 185-204