1. Department of Neurosurgery, University of California, San Francisco , San Francisco, California , USA
2. Division of Neuro-Oncology, University of California San Francisco and Weill Institute for Neurosciences , San Francisco, California , USA
3. Center for Neuro-Oncology, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School , Boston, Massachusetts , USA
4. Department of Neurology, Memorial Sloan Kettering Cancer Center, Department of Neurology, Weill Cornell Medicine, Joan & Sanford I. Weill Medical College of Cornell University , New York, New York , USA
5. Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, Pediatric Oncology Branch, National Cancer Institute, National Institutes of Health , Bethesda, Maryland , USA
6. Division of Neuro-Oncology, Department of Neurology, Mayo Clinic , Phoenix, Arizona , USA