1. Research Unit for ORL Head & Neck Surgery and Audiology Odense University Hospital University of Southern Denmark Odense Denmark
2. Department of Nuclear Medicine Odense University Hospital Odense Denmark
3. Research Unit for Clinical Physiology and Nuclear Medicine Department of Clinical Research University of Southern Denmark Odense Denmark
4. Department of Database Section 1: Cardiovascular, Surgical and Acute Domains Danish Clinical Registries Odense Denmark