1. Department of Oncology, Stavanger University Hospital , Stavanger , Norway
2. Department of Clinical Medicine, University of Bergen , Bergen , Norway
3. Stavanger Medical Imaging Laboratory (SMIL), Department of Radiology, Stavanger University Hospital , Stavanger , Norway
4. Institute for Data- and Electrotechnology, Faculty of Science and Technology, University of Stavanger , Stavanger , Norway
5. Department of Oncology and Medical Physics, Haukeland University Hospital , Bergen , Norway
6. Department of Clinical Science, University of Bergen , Bergen , Norway
7. Department of Neurosurgery, Haukeland University Hospital , Bergen , Norway
8. Department of Pathology, Haukeland University Hospital , Bergen , Norway
9. Biostatistics, Stavanger University Hospital , Stavanger , Norway
10. Department of Neurology, Stavanger University Hospital , Stavanger , Norway