Institution: | ∗ Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Basel, Basel, Switzerland † Department of Phoniatrics, University Hospital Basel, Basel, Switzerland ‡ Hightech Research Centre of Cranio-Maxillofacial Surgery, University Hospital Basel, Basel, Switzerland § Department of Radiology, Medical University Graz, Graz, Austria ‖ Department of Phoniatrics, ENT University Hospital, Medical University, Graz, Graz, Austria |