1. Department of Otolaryngology, University of São Paulo, São Paulo, SP, Brazil
2. Department of Otolaryngology and Head & Neck Surgery, ENT Research Laboratory, Universidade Federal de São Paulo, São Paulo, SP, Brazil
3. Division of Rhinology, University of British Columbia, Vancouver, Canada
4. Department of Otorhinolaryngology and Head and Neck Surgery, Universidade Federal de São Paulo, São Paulo, SP, Brazil
5. Department of ENT, Policlinica de Botafogo, Rio de Janeiro, RJ, Brazil