1519-3993 1519-3993 S1519-39932017000300457 10.24220/P1519-3993-2017220300009 Brazil 00 12 2017 00 12 2017 22 3 457 473

273-87 182-97 527-50 485-508 100 100 33-46 67-88 10 20 20 517-24 7 3 14 40 40 143-55 12 359-64 Universidade Federal do Paraná Universidade Federal do Paraná 32 2 2 241-60