1. Academic Clinic of Otolaryngology and Head and Neck surgery, Department of Surgery and Translational Medicine; University of Florence; Florence Italy
2. ENT Department; Rouen University Hospital; Rouen France
3. ENT Department; Comprehensive Cancer Centre; Caen France
4. Endoscopic Skull Base Center, Department of Otorhinolaryngology, Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands