[1] Cent Brain Tumor Registry US, Hinsdale, IL USA
[2] Duke Univ, Sch Med, Dept Neurosurg, Durham, NC USA
[3] Duke Univ, Preston Robert Tisch Brain Tumor Ctr, Sch Med, Durham, NC USA
[4] NCI, Trans Divis Res Program TDRP, Div Canc Epidemiol & Genet DCEG, Bethesda, MD USA
[5] NCI, Neuro Oncol Branch, Ctr Canc Res, NIH, Bethesda, MD USA
[6] NCI, Ctr Biomed Informat & Informat Technol CBIIT, Bethesda, MD USA