[1] Head and Neck Department, ENT & Oral Surgery Unit, G.B. Morgagni-L. Pierantoni Hospital, Forlì, Asl of Romagna, Viale C. Forlanini 34, Forlì
[2] Department of Head and Neck Surgery, Otolaryngology Jordanian Royal Medical Services, King Hussein Medical Centre, Amman
[3] Department of Otolaryngology, Faculty of Medicine, Suez Canal University Teaching Hospitals, Ismailia