1 Division of Otolaryngology, Department of Surgery, Dentistry Pediatrics and Gynecology, University of Verona, Piazzale Aristide Stefani, 1, 37126 Verona, Italy.
2 Division of Otolaryngology, Department of Surgery, Dentistry Pediatrics and Gynecology, University of Verona, Piazzale Aristide Stefani, 1, 37126 Verona, Italy. Electronic address: valerio.arietti@gmail.com.
3 Division of Otolaryngology, "San Maurizio" Hospital, Bolzano, Italy.