1 Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy. Electronic address: [email protected].
2 Department of Surgical Sciences, University of Turin, Turin, Italy.
3 Department of Sense Organs, Sapienza University of Rome, Rome, Italy.
4 Department of Otolaryngology, University of Perugia, Perugia, Italy.
5 Department of Experimental and Clinical Medicine, Unit of Audiology, Regional Centre for Cochlear Implants and ENT Diseases, Magna Graecia University, Catanzaro, Italy.
6 Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy.