1. ENT Unit, Department of Surgery, Azienda USL—IRCCS di Reggio Emilia, 42123 Reggio Emilia, Italy
2. Audiology & Vestibology Service, Centromedico, 6500 Bellinzona, Switzerland
3. ENT Unit, Santa Maria Goretti Hospital, Azienda USL di Latina, 04100 Latina, Italy
4. Otorhinolaryngology—Head and Neck Section, Surgery Department, King Abdulaziz Medical City, Jeddah 21556, Saudi Arabia
5. Otorhinolaryngology and Audiology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Policlinico S. Orsola-Malpighi, 40138 Bologna, Italy
6. Department of Otology and Skull Base Surgery, Gruppo Otologico, Casa Di Cura Privata “Piacenza” S.P.A., 29121 Piacenza, Italy
7. Faculty of Medicine, University of Lorraine, 54000 Vandoeuvre-lès-Nancy, France
8. Audiology and Ear Surgery Unit, Azienda USL—IRCCS di Reggio Emilia, 42123 Reggio Emilia, Italy