1. Department of Oto-Rhino-Laryngology, Head and Neck Surgery and Audiology, Rigshospitalet/Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark;
2. East Danish Cochlear Implant Centre and Department of Oto-Rhino-Laryngology, Head and Neck Surgery and Audiology, Copenhagen University Hospital Rigshospitalet/Gentofte Hospital, Copenhagen, Denmark;
3. Patient Organisation Decibel, Hellerup, Denmark;
4. Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark