1981-5271 1981-5271 S1981-52712015000300370 10.1590/1981-52712015v39n3e02082014 Brasil 00 07 2015 00 07 2015 39 3 370 377

1 2 3 4 5 6 2 5/6 5/6 1-4 7 8 2 3/4 3/4 9 33 3 3 433-40 10 17. ed 11 36 1 1 16-25 12 81 1 1 617-25 13 67 2 2 92-5 14 67 9 9 487-90 15 178 1 1 34-41