1. Department of Neurological Surgery, University of California, San Francisco
2. Department of Neurological Surgery, Oregon Health Sciences University, Portland
3. Department of Pathology, University of California, San Francisco
4. Department of Radiology and Biomedical Imaging, University of California, San Francisco
5. Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia
6. Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio
7. Section of Epidemiology and Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, Texas
8. Department of Radiology, University Hospitals of Cleveland, Cleveland, Ohio
9. Research Division, University Hospitals of Cleveland, Cleveland, Ohio
10. Seidman Cancer Center, University Hospitals of Cleveland, Cleveland, Ohio
11. Mayo Clinic, Rochester, Minnesota
12. Department of Neurology, University of California, San Francisco