1. University of Maryland Medical System, Baltimore
2. NRG Oncology Statistics and Data Management Center, Philadelphia, Pennsylvania
3. Memorial Sloan-Kettering Cancer Center, New York City, New York
4. Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
5. Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee
6. The Chester County Hospital, West Chester, Pennsylvania
7. Huntsman Cancer Hospital, University of Utah, Salt Lake City
8. MBCCOP, John H. Stroger Jr Hospital of Cook County, Chicago, Illinois
9. University of Maryland Medical System, Baltimore9Food and Drug Administration, Bethesda, Maryland
10. Department of Oncology, USON-Texas, Bedford, Texas
11. Shadyside Hospital, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
12. Christiana Care Health Services Inc, CCOP, Newark, Delaware
13. Greenville South Carolina, CCOP, Greenville
14. Southeast Cancer Control Consortium Inc, CCOP, Winston Salem, North Carolina
15. Cleveland Clinic, Cleveland, Ohio
16. The Schiffler Cancer Center, Wheeling, West Virginia
17. Brown University Oncology Group, Providence, Rhode Island
18. Memorial Sloan-Kettering Cancer Center, New York City, New York18University of Texas MD Anderson Cancer Center, Houston