1. Unit of Applied Clinical Research, NTNU, Trondheim and Unit of Oncology and Palliative Care, Department of Internal Medicine, Nordland Hospital, Bodø, Norway
2. Unit of Applied Clinical Research, NTNU and Section of Geriatrics, University Hospital of Trondheim, Trondheim, Norway
3. Unit of Applied Clinical Research, NTNU, Trondheim, Norway and Department of Public Health, Aberdeen Medical School, Aberdeen, UK
4. Loge Unit of Applied Clinical Research, NTNU, Trondheim and Department of Behavioural Sciences in Medicine, University of Oslo, Norway
5. Department of Oto-Rhino-Laryngology, Malmö University Hospital, Malmö, Sweden
6. Unit of Applied Clinical Research, NTNU, Trondheim and Palliative Medicine Unit, Department of Radiotherapy and Oncology, University Hospital of Trondheim, Trondheim, Norway