1. a Multidisciplinary Oncology Center, University of Lausanne Hospitals, Lausanne, Switzerland
2. b Laboratory of Tumor Biology and Genetics at the Department of Neuro-surgery, University of Lausanne Hospitals, Lausanne, Switzerland
3. c Department of Neuro-Oncology, Erasmus University Hospital Rotterdam/Rotterdam Cancer Center, Rotterdam, The Netherlands
4. d Department of Medicine, Princess Margaret Hospital and the University of Toronto, Toronto, Ontario, Canada
5. e Department of Neurology, University of Tübingen, Tübingen, Germany
6. f Department of Radiation Oncology, University of Lausanne Hospitals, Lausanne, Switzerland
7. g Department of Clinical Neurosciences, University of Calgary and Foothills Hospital, Calgary, Alberta, Canada