1. Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
2. Department of Otolaryngology, University of Perugia, Perugia, Italy
3. Department of Experimental and Clinical Medicine, Unit of Audiology, Regional Centre for Cochlear Implants and ENT Diseases, Magna Graecia University, Catanzaro, Italy
4. Otolaryngology Department, San Giovanni-Addolorata Hospital, Rome, Italy
5. Radiology Oncology and Anatomopathological Department, University La Sapienza, Rome, Italy
6. Organ of Sense Department, University La Sapienza, Rome, Italy
7. Department of Otolaryngology, University of Turin, Turin, Italy