1. European Palliative Care Research Centre (PRC), Department of Cancer Research and Molecular Medicine, Faculty of Medicine, NTNU, Norwegian University of Science and Technology and St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway;
2. Cancer Clinic, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway;
3. Department of Circulation and Medical Imaging, NTNU, Norwegian University of Science and Technology, Trondheim, Norway;
4. Department of Thoracic Medicine, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway;
5. Department of Oncology, Oslo University Hospital and University of Oslo, Oslo, Norway