0102-5473 0102-5473 S0102-54732014000200703 10.5007/2175-795X.2014v32n2p703 Brazil 00 08 2014 00 08 2014 32 2 703 734

1 1 92 92 86-9 5 13 13 73-85 2 8 8 163-81 36 2 2 611-27 1 1 3 2 2 183-92