1. Otorhinolaryngology Unit A.Gemelli University Hospital Foundation IRCCS Rome Italy
2. Otorhinolaryngology Unit Ospedale Bellaria Dip Chirurgie Specialistiche AUSL Bologna Italy
3. Otorhinolaryngology Unit Head and Neck Department IRCCS San Raffaele Scientific Institute, Vita‐Salute San Raffaele University Milan Italy
4. Department of Medical—Surgical Sciences and Advanced Technologies E.N.T. Unit P.O. “G. Rodolico”, University of Catania Catania Italy
5. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences University of Pavia Pavia Italy
6. Department of Neurosciences Otolaryngology Section University of Padova Padova Italy
7. Department of Otorhinolaryngology Rhinology Unit Eastern Piedmont University, Maggiore Hospital Novara Italy
8. Otorhinolaryngology Unit Department of Health Sciences ASST Santi Paolo e Carlo Hospital, Università degli Studi di Milano Milan Italy
9. Department of Clinical Sciences and Community Health Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico", University of Milan Milan Italy
10. Otolaryngology, Audiology and Phoniatric Operative Unit Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine Azienda Ospedaliera Universitaria Pisana, University of Pisa Pisa Italy
11. Department of Neuroscience, Reproductive and Odontostomatological Sciences‐ENT Section Head and Neck Department‐ENT Section University of Naples Federico II, AOU Federico II Naples Italy
12. Rhinology Unit Department of Sensory Organs Sapienza University of Rome Rome Italy
13. Department of Otolaryngology—Head and Neck Surgery Azienda Ospedaliero Universitaria di Modena Modena Italy
14. Department of Otorhinolaryngology University of Turin, San Luigi Gonzaga Hospital Orbassano Italy
15. Epidemiology and Biostatistics Core Facility, Gemelli Science and Technology park Fondazione Policlinico Universitario Agostino Gemelli IRCCS Rome Italy
16. Department of Head, Neck and Sensory Organs Catholic University of The Sacred Heart Rome Italy
17. Otorhinolaryngology Unit Ospedale San Giovanni Evangelista Tivoli Italy
18. Otolaryngology University Unit “S. M. Goretti Hospital” Latina Italy
19. ENT Department Azienda USL Reggio Emilia—IRCCS Reggio Emilia Italy
20. Department of Sensory Organs Sapienza University of Rome Rome Italy
21. Otolaryngology Head and Neck Surgery Unit AORN Ospedali della Colli Naples Italy
22. Division of Otorhinolaryngology Department of Medicine, Surgery and Pharmacy Azienda Ospedaliera Universitaria di Sassari, University of Sassary Sassari Italy
23. Otorinolaryngology Unit Head and Neck Department ASST Sette Laghi and UPLOAD Research Center, University of Insubria Varese Italy
24. Otorhinolaryngology Unit Dipartimento DISC IRCCS Policlinico San Martino, Università di Genova Genoa Italy