1. Department of Otorhinolaryngology, Holstebro Regional Hospital, Holstebro, Denmark
2. Department of Clinical Genetics, Rigshospitalet/The Kennedy Centre, and Institute of Clinical Medicine, University of Copenhagen, København, Denmark
3. Department of Otorhinolaryngology, Head & Neck Surgery and Audiology, Copenhagen University Hospital Rigshospitalet/Gentofte Hospital, København, Denmark