1. Department of Oncology, Herlev University Hospital, Herlev and Gentofte Hospital, Copenhagen, Denmark
2. Department of Medicine, Herlev University Hospital, Herlev, and Gentofte Hospital, Copenhagen, Denmark
3. Biostatistics, F. Hoffmann-La Roche Ltd, Basel, Switzerland
4. Department of Neuro-Oncology, Aix-Marseille University, Marseille, France
5. Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark