1. Head and Neck Surgery DepartmentUniversity of Sao Paulo Medical School Sao Paulo Brazil
2. Department of Head and Neck Surgery and OtorhinolaryngologyA C Camargo Cancer Center Sao Paulo Brazil
3. Department of Surgery, School of MedicineUniversidad de Antioquia, Centro de Excelencia en Cirugia de Cabeza y Cuello‐CEXCA Medellin Colombia
4. Head and Neck Surgery Section, Department of Surgical OncologyFox Chase Cancer Center Philadelphia Pennsylvania USA
5. Department of Clinical OncologyPamela Youde Nethersole Eastern Hospital Hong Kong China
6. Department of Head and Neck Surgical Oncology, UMC Utrecht Cancer CenterUniversity Medical Center Utrecht Utrecht The Netherlands
7. University of Udine School of Medicine Udine Italy
8. Department of Otolaryngology‐Head and Neck SurgeryRadboud University Medical Center Nijmegen The Netherlands
9. Department of Otorhinolaryngology, Head and Neck SurgeryUniversity of Helsinki and Helsinki University Hospital Helsinki Finland
10. Research Program in Systems Oncology, Faculty of MedicineUniversity of Helsinki Helsinki Finland
11. Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and TechnologyKarolinska Institute and Karolinska Hospital Stockholm Sweden
12. Screening GroupInternational Agency for Research in Cancer. IARC Lyon France
13. Department of OtolaryngologyUniversity of Michigan Ann Arbor Michigan USA
14. Head and Neck UnitThe Royal Marsden Hospital London UK
15. Department of Otolaryngology Head and Neck SurgeryInstitut Gustave Roussy and University Paris‐Sud Villejuif Cedex France
16. Department of Oncology, Section Head and Neck OncologyKU Leuven Leuven Belgium
17. Otorhinolaryngology, Head and Neck SurgeryUniversity Hospitals Leuven, Leuven Cancer Institute Leuven Belgium
18. Department of Otolaryngology, Head and Neck Surgery, NHS LothianUniversity of Edinburgh Edinburgh UK
19. Department of Otorhinolaryngology, Maxillofacial, and Thyroid Surgery, Fondazione IRCCS, National Cancer Institute of MilanUniversity of Milan Milan Italy
20. Department of OtolaryngologyBeaumont Hospital Dublin Ireland
21. Servicio de OtorrinolaringologíaHospital Universitario Central de Asturias, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo Oviedo Spain
22. Department of Otorhinolaryngology, Institute of Phoniatry/PedaudiologyJena University Hospital Jena Germany
23. Department of Radiation OncologyUniversity of Florida Gainesville Florida USA
24. Head Neck ServicesTata Memorial Hospital Mumbai Maharashtra India
25. Department of Clinical OncologyThe University of Hong Kong Hong Kong China
26. International Head and Neck Scientific Group Udine Italy