1. Department of Otolaryngology-Head and Neck Surgery, University Hospital of Modena, Modena, Italy
2. Department of Maxillofacial Surgery and Otolaryngology, IRCCS Research Hospital Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
3. Department of Otolaryngology, University Hospital of Foggia, Foggia, Italy
4. Department of Thoracic Surgery, Ospedale Maggiore della Carità di Novara, Novara, Italy
5. Department of Surgery, Mirano Hospital, Mirano, Italy
6. Department of Surgical Oncological and Gastrointestinal Sciences, University of Padova, Padua, Italy
7. Department of Otorhinolaryngology and Audiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Policlinico di Sant’Orsola, Italy
8. Department of Medical and Surgical Sciences, Alma Mater Studiorum University, Bologna, Italy