1. Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
2. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
3. Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
4. Department of Oncology, Odense University Hospital, Odense, Denmark
5. Department of Clinical Research, University of Southern Denmark, Odense, Denmark
6. Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
7. Department of Neurosurgery, Aarhus University Hospital, Aarhus, Denmark
8. Department of Oncology, Copenhagen University Hospital, Copenhagen, Denmark