| Affiliation: | 1. Head and Neck Department, ENT & Oral Surgery Unit, G.B. Morgagni ‐ L. Pierantoni Hospital, Forlì – Infermi Hospital, Faenza ‐ ASL of Romagna, Forli, University of Ferrrara, Italy;2. Department of Otolaryngology Head and Neck Surgery, Fazzi Hospital, Lecce, Italy;3. Department of Otorhinolaryngology, Alexandria University, Alexandria, Egypt;4. Department of Otorhinolaryngology, Grupo Medico San Pedro, Monterrey, Mexico;5. Department of Otolaryngology, Fabrizio Spaziani Hospital, Frosinone, Italy;6. Department of Otolaryngology, Department of Clinical Sciences and Community Health, Fondazione I.R.C.C.S. Ca’ Granda, Ospedale Maggiore Policlinico, University of Milan, Milan, Italy;7. Department of Otorhinolaryngology, Doctor Peset University Hospital, Valencia, Spain;8. Department of Otolaryngology, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal;9. Department of Otolaryngology, S. Pio X Hospital, Milan, Italy;10. Ear Nose Throat‐Head and Neck Surgery Department, Faculty of Medicine, Hacettepe University, Ankara, Turkey;11. Department of Otolaryngology, San Bassiano Hospital, Bassano del Grappa, Vicenza, Italy;12. Department of Otolaryngology Head Neck Surgery, IRCCS Policlinico San Matteo Foundation, University of Pavia, Pavia, Italy;13. Department of Otolaringology, Campus Universitario, University of Navarra, Pamplona, Spain;14. Otorhinolaryngologic Unit, San Giovanni di Dio e Ruggi d’ Aragona University Hospital, Salerno, Italy;15. First Otorhinolaryngologic Unit, Azienda Ospedaliero‐Universitaria Pisana, Pisa, Italy;16. Biostatistics Unit, G.B. Morgagni ‐ L. Pierantoni Hospital, Forlì ‐ ASL of Romagna, Forli, Italy |
