1. Department of Head and Skin, Upper Airway Research Laboratory (URL) Ghent University Hospital, Ghent University Ghent Belgium
2. Department of Otorhinolaryngology, Head and Neck Surgery, St. Elisabeth‐Hospital Ruhr University Bochum Bochum Germany
3. Department of Otorhinolaryngology, Head and Neck Surgery Witten/Herdecke University Hagen Germany
4. Division of ENT Diseases CLINTEC Karolinska Institute Stockholm Sweden