1. Department of Neurology, University of Rochester Medical Center, Rochester, New York, USA
2. Department of Neurology, Johns Hopkins University, Baltimore, Maryland, USA
3. Geisinger Health, Neuroscience and Cancer Institutes, and Geisinger Commonwealth School of Medicine, Scranton, Pennsylvania, USA
4. Vaud University Hospital Center, Lausanne University Hospital and University of Lausanne, Departments of Clinical Neurosciences and Oncology, Lausanne, Switzerland
5. Department of Neurology and Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center and NY Presbyterian Hospital, New York, New York, USA
6. Departments of Neurology and Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado, USA
7. Departments of Pathology and Neurosurgery, Medical University of South Carolina and Hollings Cancer Center, Charleston, South Carolina, USA
8. University of Virginia, Departments of Neurology, Neurological Surgery, and Medicine, Charlottesville, Virginia, USA
9. Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts, USA
10. Wake Forest School of Medicine, Department of Neurology, Internal Medicine, Section on Hematology and Oncology, Winston-Salem, North Carolina, USA
11. Brain Tumor Center at Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands
12. Department of Neurosurgery, Inova Neuroscience and Spine Institute, Virginia Commonwealth University, Richmond, Virginia, USA