1. Department of Medicine 2 Holbæk Hospital, a Copenhagen University Hospital Holbæk Denmark
2. Department of Anaesthesiology Copenhagen University Hospital, Amager & Hvidovre Hvidovre Denmark
3. REHPA, Danish Knowledge Centre for Rehabilitation and Palliative Care Odense University Hospital Nyborg Denmark
4. Department of Clinical Research University of Southern Denmark Odense Denmark
5. Department of Regional Health Research University of Southern Denmark Odense Denmark
6. Department of Anaesthesiology Holbæk Hospital, a Copenhagen University affiliated hospital Holbæk Denmark
7. Department of Otorhinolaryngology and Maxillofacial Surgery Zealand University Hospital Roskilde Denmark