1. Department of Neurosurgery and Duke Cancer Institute, Duke University School of Medicine . Durham, North Carolina , USA
2. Department of Epidemiology and Biostatistics, University of California, San Francisco , San Francisco, California , USA
3. School of Public Health, Yale University , New Haven, Connecticut , USA
4. Department of Neurological Surgery, University of California, San Francisco , San Francisco, California , USA
5. Department of Obstetrics and Gynecology and Duke Cancer Institute, Duke University School of Medicine . Durham, North Carolina , USA
6. Rollins School of Public Health, Emory University , Atlanta, Georgia , USA
7. Department of Epidemiology and Population Health, Stanford University , Palo Alto, California , USA
8. Center for Genetic Epidemiology, University of Southern California , Los Angeles, California , USA
9. Department of Neurosurgery, Brigham and Women’s Hospital , Boston, Massachusetts , USA