1. Department of Neurosurgery, University Neurosurgical Center Holland (UNCH), Leiden University Medical Center and Haaglanden Medical Center, Leiden/The Hague, the Netherlands
2. Department of Neurology, Leiden University Medical Center, the Netherlands
3. Department of Neurology, Haaglanden Medical Center, The Hague, the Netherlands
4. Department of Neuro-Oncology, Netherlands Cancer Institute – Antoni van Leeuwenhoek, Amsterdam
5. Department of Medicine, Division of Endocrinology and Center for Endocrine Tumors, Leiden University Medical Center, the Netherlands