1. Hearing Systems Section, Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, Denmark
2. Institute of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
3. Research Unit for Oto-Rhino-Laryngology, Odense University Hospital, Odense, Denmark
4. Centre for Applied Audiology Research, Oticon A/S, Smørum, Denmark