1. Otolaryngology Department, University of Perugia, Perugia, Italy
2. Department of Sense Organs, Sapienza University of Rome, Italy
3. Maxillo-facial Department, Manchester Royal Infirmary, Manchester, United Kingdom
4. Radiology, Oncology, and Anatomopathological Department, University La Sapienza, Rome, Italy
5. AOU San Giovanni e Ruggi D’Aragona, University of Salerno, Italy