1 Department of Medicine and Surgery, University of Salerno, Salerno, Italy. Electronic address: ascarpa@unisa.it.
2 Department of Otolaryngology, Azienda Ospedaliera Universitaria Senese, Siena, Italy.
3 Department of Sense Organs, Sapienza University Rome, Rome, Italy.
4 Cassandro Claudia, M.D. - Department of Surgical Sciences, University of Turin, Turin, Italy.
5 Otolaryngology Department, San Giovanni-Addolorata Hospital, Rome, Italy.
6 Maxillofacial Surgery Unit, University Hospital of Naples "Federico II", Naples, Italy.
7 Unit of Audiology, Regional Centre for Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, Catanzaro, Italy.
8 Department of Medicine and Surgery, University of Salerno, Salerno, Italy.