1. Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
2. Ear, Nose, and Throat Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Via Conca 71, 60020 Ancona, Italy
3. ENT Department, AORN Cardarelli, 80131 Napoli, Italy
4. Department of Medicine and Surgery, University of Salerno, 84084 Salerno, Italy