1 Faculty of Medicine and Surgery, University of Enna Kore, 94100 Enna, Italy. Electronic address: [email protected].
2 Head & Neck Study Group, Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS), 13005 Marseille, France; Department of Human Anatomy and Experimental Oncology, UMONS Research Institute for Health Sciences and Technology, University of Mons (UMons), Mons, Belgium. Electronic address: [email protected].
3 Head & Neck Study Group, Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS), 13005 Marseille, France; Department of Otorhinolaryngology - Head and Neck Surgery, Donostia University Hospital, San Sebastian, Spain.
4 Department of Medical and Surgical Sciences and Advanced Technologies "GF Ingrassia", ENT Section, University of Catania, Via S. Sofia, 78, 95125 Catania, Italy.
5 Faculty of Medicine and Surgery, University of Enna Kore, 94100 Enna, Italy; Head & Neck Study Group, Young-Otolaryngologists of the International Federations of Oto-Rhino-Laryngological Societies (YO-IFOS), 13005 Marseille, France. Electronic address: [email protected].