1. Department of ENT Head & Neck Surgery, Odense University Hospital, Odense C, Denmark
2. Institute of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense M, Denmark
3. Research Unit for Clinical Biomechanics, Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense M, Denmark
4. Ear Nose Throat Private Clinic, Odense C, Denmark