2236-3459 2236-3459 S2236-34592014000200071 10.1590/S2236-34592014000200005 Brazil 00 09 2014 00 09 2014 18 43 71 91

1 1 1 44-65 28 100 100 831-55 30 1 1 79-89 59 59 1-146 12 45 45 296-309 261 287-302 43 43 21-31