1. Department of OtorhinolaryngologyUniversity of Lübeck Lübeck Germany
2. Helios University Hospital Wuppertal, University Witten/Herdecke Wuppertal Germany
3. University Hospitals Cleveland Medical Center, Case Western Reserve University Cleveland Ohio
4. Department of Otolaryngology‐Head and Neck SurgeryWeill Cornell Medicine New York New York
5. Department of Otorhinolaryngology, Head and Neck SurgeryUniversity of Freiburg Freiburg im Breisgau Germany
6. Department of Otorhinolaryngology, Head and Neck SurgeryTechnische Universität München Munich Germany