| Affiliation: | 1. Department of Head and Neck Surgery and Otorhinolaryngology, Hospital AC Camargo, S?o Paulo, Brazil;2. Department of Surgery, Universidad de La Sabana, Fundacion Abood Shaio, Bogota, Colombia;3. Department of Head and Neck Surgery, Brazilian National Cancer Institute, Rio de Janeiro, Brazil;4. Department of Head and Neck Surgery, Barretos Cancer Hospital, Barretos, Brazil;5. Department of Head and Neck Surgery, Liga Norte‐Riograndense contra o Cancer, Natal, Brazil;6. Department of Head and Neck Surgery, Heliópolis Hospital, S?o Paulo, Brazil;7. Department of Head and Neck Surgery, Hospital Ana Costa, Santos, Santos, Brazil;8. Department of Head and Neck Surgery, Erasto Gaertner Hospital, Curitiba, Brazil;9. Head and Neck Division, Department of Surgery, Santa Casa Medical School, S?o Paulo, SP, Brazil;10. Department of Head and Neck Surgery, Hospital de Ensino da Faculdade de Medicina do ABC, S?o Bernardo do Campo, Brazil;11. Department of Head and Neck Surgery, Hospital Araujo Jorge, Goiania, Brazil;12. Department of Head and Neck Surgery, Instituto do Cancer Arnaldo Vieira de Carvalho, S?o Paulo, Brazil |
