1. NHS Lothian/Edinburgh University, Edinburgh, United Kingdom.
2. Head and Neck Cancer Unit, Guy's and St Thomas' Hospital, NHS Foundation Trust, London, United Kingdom.
3. NIHR Royal Marsden Hospital and Institute of Cancer Research BRC, London, United Kingdom.
4. University of Udine School of Medicine, Udine, Italy.
5. Department of Surgery, Universidad de Oviedo, Oviedo, Spain.
6. Department of Head and Neck Surgery and Otorhinolaryngology, A.C. Camargo Cancer Center, São Paulo, Brazil.
7. Departments of Surgery and Otolaryngology – Head and Neck Surgery, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York.
8. Head and Neck Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York.
9. Former Director of the Department of Surgical Sciences and Chairman of the ENT Clinic at the University of Udine School of Medicine, Udine, Italy.