1. Rose Ella Burkhardt Brain Tumor & Neuro-Oncology Center and
2. Department of General Surgery, Washington University, St. Louis, Missouri
3. Department of Neurosurgery, Cleveland Clinic, Cleveland, Ohio;
4. Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; and
5. Central Brain Tumor Registry of the United States, Hinsdale, Illinois;
6. Department of Medicine, Section of Epidemiology and Population Sciences, Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas;
7. Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio;