1. Deparment of Oncology, Regional Advisory Unit for Palliative Care, Oslo University Hospital (OUH), Oslo, Norway
2. Department of Oncology, European Palliative Care Research Centre (PRC), Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
3. Department of Neurosurgery, OUH, Oslo, Norway
4. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
5. Department of Oncology, OUH, Norway, Oslo (OEY, NA, SK)
6. Department of Public Health and General Practice, Norwegian University of Science and Technology, Trondheim, Norway