0100-3143 0100-3143 S0100-31432015000401169 10.1590/2175-623646035 Brazil 00 12 2015 00 12 2015 40 4 1169 1189

2 11 11 11-42 18 18 147-71 1-2 1-2 8. ed 11-43 7-20 15-33 247-58 5 5 37-49 2012 Maringá 23 23 5-15