1. Department of Otolaryngology – Head and Neck Surgery University Hospital of Verona Verona Italy
2. Unit of Otolaryngology, Department of Surgery, Dentistry and Pediatrics University of Verona Verona Italy
3. Department of Otorhinolaryngology – Head and Neck Surgery University Hospital of Modena Modena Italy
4. Department of Otolaryngology Yokosuka Kyosai Hospital Yokohama Japan
5. Department of Head and Neck Surgery University of Sao Paulo School of Medicine Sao Paulo Brazil
6. Department of Experimental and Clinical Medicine University of Florence Florence Italy
7. Department of Otorhinolaryngology San Luigi Gonzaga Hospital, University of Turin Turin Italy
8. Department of Otorhinolaryngology – Head and Neck Surgery, Donostia University Hospital, Biodonostia Research Institute Faculty of Medicine, Deusto University San Sebastian Spain
9. Department of Otorhinolaryngology – Head and Neck Surgery Donostia University Hospital San Sebastian Spain
10. Department of Otolaryngology – Head and Neck Surgery San Raffaele Scientific Institute, Vita‐Salute University Milan Italy
11. Unit of Otorhinolaryngology Vittorio Veneto Hospital Vittorio Veneto Italy
12. Unit of Otorhinolaryngology IRCCS Humanitas Research Hospital Milan Italy
13. Department of Biomedical Sciences Humanitas University Milan Italy
14. Department of Sense Organs Sapienza University of Rome Rome Italy
15. Department of Otorhinolaryngology – Head and Neck Surgery IRCCS Azienda Ospedaliero‐Universitaria di Bologna Bologna Italy
16. Department of Specialist, Diagnostic and Experimental Medicine (DIMES), Alma Mater Studiorum Università di Bologna Bologna Italy
17. Department of Otorhinolaryngology – Head and Neck Surgery Complexo Hospitalario Universitario A Coruña A Coruña Spain
18. Unit of Otorhinolaryngology – Head and Neck Surgery, ASST Spedali Civili Brescia, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health University of Brescia Brescia Italy
19. Department of Otolaryngology – Head and Neck Surgery Yokohama City University School of Medicine Yokohama Japan
20. Section of Otolaryngology, Department of Medical, Surgical and Health Sciences University of Trieste Trieste Italy
21. Department of Otorhinolaryngology – Head and Neck Surgery IRCCS Ospedale Policlinico San Martino Genoa Italy
22. Department of Surgical Sciences and Integrated Diagnostics (DISC) University of Genoa Genoa Italy
23. Unit of Otolaryngology, Santi Paolo e Carlo Hospital, Department of Health Sciences Università degli Studi di Milano Milan Italy
24. Department of Otorhinolaryngology University Hospital of Jerez Cádiz Spain
25. Department of Otolaryngology – Head and Neck Althaia, Xarxa Assitencial Universitaria de Manresa Barcelona Spain
26. Department of Otorhinolaryngology – Head and Neck Surgery University Hospital Ostrava Ostrava Czech Republic
27. Department of Head and Neck Surgery Cancer Institute of São Paulo ICESP São Paulo Brazil
28. Department of Otorhinolaryngology – Head and Neck Surgery Hospital Universitario Virgen Macarena Seville Spain
29. Department of Otolaryngology – Head and Neck Surgery IRCCS Regina Elena National Cancer Institute Rome Italy
30. Unit of Otorhinolaryngology Fondazione Policlinico Universitario A. Gemelli IRCCS Rome Italy
31. Department of Head and Neck and Sensory Organs Università Cattolica del Sacro Cuore Rome Italy
32. Department of Head and Neck Surgery University of São Paulo Medical School São Paulo Brazil
33. Unit of Otolaryngology – Head and Neck Surgery San Giovanni Bosco Hospital Turin Italy