1. Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
2. Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
3. Department of Oncology, Oslo University Hospital, Oslo, Norway
4. Department of Oncology, Sahlgrenska University Hospital, Region Västra Götaland, and Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
5. Cancer Clinic, St. Olavs Hospital, Trondheim University Hospital, Norway
6. Department of Oncology, University Hospital of Southern Denmark, Lillebaelt Hospital, Vejle, Denmark
7. Department of Radiation Oncology, Landspitali University Hospital, Reykjavik, Iceland
8. Department of Immunology, Genetics and Pathology, Uppsala University, Sweden
9. Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
10. Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
11. Department of radiation sciences – oncology, Umeå University
12. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
13. Danish, Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark