1. Division of Otorhinolaryngology, “S.s. Giacomo e Cristoforo” General Hospital, Massa, Italy
2. Department of Neuroscience, Unit of Otolaryngology, Audiology and Phoniatrics, University of Pisa, Italy
3. 1st Otorhinolaryngology Unit, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy