1. Department of Surgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
2. Department of Neurology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
3. Department of Neurology, Zaans Medisch Centrum, Zaandam, the Netherlands
4. Department of Neurology, Tergooi, Blaricum, the Netherlands
5. Department of Neurology, Dijklander Ziekenhuis, Purmerend, the Netherlands
6. Department of Neurology, OLVG, Amsterdam, the Netherlands
7. Department of Radiology and Nuclear Medicine, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
8. Department of Neurosurgery, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands