[1] Pontificia Univ Catolica Parana, Escola Med, Rua Imaculada Conceicao 1155, BR-80215901 Curitiba, Parana, Brazil
[2] Univ Sao Paulo, Dept Molestias Infecciosas & Parasitarias, Fac Med, Sao Paulo, SP, Brazil
[3] Univ Sao Paulo, Inst Med Trop Sao Paulo, Lab Parasitol LIM 46, Sao Paulo, SP, Brazil
[4] Univ Sao Paulo, Dept Otorrinolaringol, Fac Med, Sao Paulo, SP, Brazil