1. Central Brain Tumor Registry of the United States, Hinsdale, IL, USA
2. Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA
3. Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, MD, USA
4. North American Association of Central Registries, Springfield, IL, USA
5. Department of Medicine, Section of Epidemiology and Population Sciences, Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
6. Division of Cancer Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA, USA