Corresponding Author

Hugo Fontan Köhler MD

Department of Head and Neck Surgery and Otolaryngology, A C Camargo Cancer Center, São Paulo, Brazil

Correspondence

Hugo Fontan Köhler, Department of Head and Neck Surgery and Otolaryngology, A C Camargo Cancer Center, Rua Prof. Antônio Prudente, 211, CEP 01509-000, São Paulo/SP, Brazil.

Email: hkohler75@gmail.com or

Email: hugo.kohler@accamargo.org.br