1. Department of Radiation Oncology, Washington University School of Medicine in St. Louis , St. Louis, MO, USA
2. Department of Neurosurgery, Duke University School of Medicine , Durham, NC, USA
3. Central Brain Tumor Registry of the United States , Hinsdale, IL, USA
4. Surveillance & Health Equity Science, American Cancer Society , Atlanta, GA, USA
5. Center for Biomedical Informatics & Information Technology and Division of Cancer Epidemiology and Genetics, National Cancer Institute , Bethesda, MD, USA
6. The Preston Robert Tisch Brain Tumor Center, Duke University School of Medicine , Durham, NC, USA
7. Duke Cancer Institute, Duke University Medical Center , Durham, NC, USA
8. Brown School, Washington University in St. Louis , St. Louis, MO, USA