1 Otolaryngology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, Italy. Electronic address: [email protected].
2 Department of Medicine and Surgery, University of Salerno, Salerno, Italy.
3 Otolaryngology Department, University Hospital of Modena, Modena, Italy.
4 Department of Diagnostic Medicine, Clinical and Public Health, University Hospital of Modena, Italy.
5 Department of Surgical Sciences, University of Torino, Torino, Italy.
6 Otolaryngology Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, Italy.