Andrea Castellucci1, Pasquale Malara2, Angelo Ghidini3. 1. ENT Unit, Department of Surgery, Arcispedale Santa Maria Nuova, AUSL, IRCCS, Viale Risorgimento 80, 42123, Reggio Emilia, Italy. andrea.castellucci@ausl.re.it. 2. Audiology & Vestibology Service, Centromedico, Viale Officina 7, 6500, Bellinzona, Switzerland. 3. ENT Unit, Department of Surgery, Arcispedale Santa Maria Nuova, AUSL, IRCCS, Viale Risorgimento 80, 42123, Reggio Emilia, Italy.