1981-5271 1981-5271 S1981-52712015000200246 10.1590/1981-52712015v39n2e02372014 Brasil Brasil 00 04 2015 00 04 2015 39 2 246 251

1 59 7 7 500-03 2 82 1 1 1-3 3 20 80-6 4 23 351-56 5 29 10 10 1121-126 6 39 259-62 7 37 4 4 584-90 8 50 4 4 367-72 9 11 2 2 209-15 10 47 2 2 11 33 5 5 169-73 12 15 5 5 308-18 13 51 1 1 14 19 5 5 685-708 15 47 4 4 352-57 16 38 2 2 S4-S9 17 National Institue of Health – NIH National Institue of Health – NIH 785-95 18 42 76-83 19 31 594-97 20 965-68 21 341 4 4 287-88 22 27 3 3 613-22 23 16 3 3 551-79