1. Department of Oncology, Linköping University Hospital, Linköping, Sweden;
2. Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden;
3. Department of Oncology, Dept. 5073, Rigshospitalet, København Ø, Denmark;
4. Department of Cancer Research and Molecular Medicine, NTNU, Norwegian University of Science and Technology, Trondheim, Norway;
5. The Cancer Clinic, St. Olav’s Hospital – Trondheim University Hospital, Trondheim, Norway;
6. Department of Neurology, Karolinska University Hospital, Solna, Sweden;
7. Department of Oncology, Odense University Hospital, University of Southern Denmark, Odense, Denmark;
8. Department of Oncology, Radiumhemmet, Karolinska University Hospital, Solna, Sweden;
9. Department of Oncology, Linköping University, Linköping, Sweden;
10. Department of Pathology, Odense University Hospital, Institute of Clinical Research, University of Southern Denmark, Odense C, Denmark;
11. Regional Cancer Center South East Sweden, Linköping, Sweden;
12. Department of Radiation Sciences & Oncology, Umeå University, Umeå, Sweden