1. Department of Surgery, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
2. University Health Care Research Center, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
3. ProtonCare Study Group
4. The Skandion Clinic, Uppsala, Sweden
5. Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
6. Department of Immunology, Genetics and Pathology, Section of Oncology, Uppsala University, Uppsala, Sweden
7. Radiation Physics, Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Malmö, Sweden
8. Department of Clinical Sciences, Lund, Oncology and Pathology, Lund University, Lund, Sweden
9. Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
10. Department of Radiation Physics, University Hospital of North Norway, Tromsø, Norway
11. Department of Oncology, Skåne University Hospital, Malmö, Sweden
12. Department of Clinical Sciences, Lund, Cancer Epidemiology and Oncology, Lund University, Lund, Sweden