1. Department of Otolaryngology, Hospital IPO, Curitiba, PR, Brazil
2. NEP, Hospital Paranaense de Otorrinolaringologia IPO, Curitiba, PR, Brazil
3. Department of Otorrinolaringology, Universidade Federal do Paraná, Curitiba, PR, Brazil
4. Evangelic Faculty of Parana Curitiba, Curitiba, Paraná, Brazil