1. University Hospital Case Medical Center, Cleveland, OH;
2. The University of Texas MD Anderson Cancer Center, Houston, TX;
3. NRG Oncology Statistics and Data Management Center, Philadelphia, PA;
4. UNC Chapel Hill Lineberger Comprehensive Cancer Center, Chapel Hill, NC;
5. University Hospital of Cleveland, Cleveland, OH;
6. Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, MA;
7. Univ of California San Francisco, San Francisco, CA;
8. Columbia University Medical Center, New York, NY;
9. The Ohio State University Wexner Medical Center, Dublin, OH;
10. Emory University, Atlanta, GA;
11. The University of Texas MD Anderson Cancer Center, Department of Neuro-Oncology, Houston, TX;
12. University of Maryland Medical Center, Baltimore, MD;