2236-3459 2236-3459 S2236-34592014000200093 10.1590/S2236-34592014000200006 Brazil 00 09 2014 00 09 2014 18 43 93 108

6 8 8 35 82 82 15-33 24 38 38 110-25 24 39 39 17-40 671957 671957 87-129 24 60 60 235-43