[1] Univ Padua, Dept Neurosci DNS, Otolaryngol Sect, I-35122 Padua, Italy
[2] Osped Angelo, ENT Dept, ULSS 3 Serenissima, I-30174 Venice, Italy
[3] Hosp Cittadella, ENT Dept, I-35013 Padua, Italy
[4] Hosp Rovigo, ENT Dept, I-45100 Rovigo, Italy
[5] Osped Riuniti Padova Sud, Dept Surg, ENT Unit, I-35043 Monselice, Italy
[6] ENT Consultant, Head & Neck Dept, ULSS 2 Marca Trevigiana, I-31100 Treviso, Italy
[7] Azienda Sanit Univ Friuli Cent ASUFC, Univ Hosp Santa Maria Misericordia, Dept Otorhinolaryngol, Dept Expt & Clin Med, I-33100 Udine, Italy
[8] San Bassiano Hosp, Dept Otolaryngol Head & Neck Surg, Via Dei Lotti 40, I-36061 Bassano Del Grappa, Italy
[9] Univ Padua, Dept Neurosci, Sect Otolaryngol, I-31100 Treviso, Italy
[10] Osped San Martino, ENT Unit, ULSS1 Dolomiti, I-32100 Belluno, Italy
[11] Univ Padua, Dept Stat Sci, I-35122 Padua, Italy