1. Fox Chase Cancer Center-Temple Health System, Philadelphia, Pennsylvania
2. ECOG-ACRIN Biostatistics Center, Dana-Farber Cancer Institute, Boston, Massachusetts
3. University of Pennsylvania, Philadelphia, Pennsylvania
4. Advocate Lutheran General Hospital, Park Ridge, Illinois
5. University of Rochester, Rochester, New York
6. MD Anderson Cancer Center, Houston, Texas
7. University of California-San Diego, La Jolla, California
8. University of Toronto, Toronto, Ontario, Canada
9. Massachusetts General Hospital Cancer Center, Boston, Massachusetts
10. Cancer Research Foundation of New York, Chappaqua, New York
11. University of Kentucky College of Medicine, Lexington, Kentucky