1. Head and Neck Department, ENT Unit, Santa Maria delle Croci Hospital, Ravenna‑AUSL of Romagna, I‑48121 Ravenna, Italy
2. Head and Neck Department, ENT and Oral Surgery Unit, Morgagni‑Pierantoni Hospital, Forl�‑and‑Santa Maria delle Croci Hospital, Ravenna AUSL of Romagna, I‑47121 Forl�, Italy
3. Department of Endocrinology, Santa Maria delle Croci Hospital, AUSL of Romagna, I‑48121 Ravenna, Italy
4. Department of ‘Organi di Senso’, University ‘Sapienza’, I‑00161 Rome, Italy
5. Department of Otolaryngology Head and Neck Surgery, Ng Teng Fong General Hospital, Jurong Community Hospital, National University Health System, Singapore 648346, Republic of Singapore
6. Department of Pathology, Santa Maria delle Croci Hospital, AUSL of Romagna, I‑48121 Ravenna, italy