1. Regional Advisory Unit in Palliative Care, Department of Oncology, Oslo University Hospital, Oslo, Norway.
2. European Palliative Care Research Centre (PRC), Department of Oncology, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
3. Department of Behavioural Sciences in Medicine, University of Oslo, Oslo, Norway.
4. Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
5. Norwegian National Unit for Rehabilitation for Rheumatic Patients with Special Needs, Oslo, Norway.