1. Stanford University, Stanford, CA
2. University of Pennsylvania, Philadelphia, PA
3. Thomas Jefferson University, Philadelphia, PA
4. Yale University, New Haven, CT
5. Memorial Sloan Kettering Cancer Center, New York, NY
6. Seattle Cancer Care Alliance, Seattle, WA
7. Johns Hopkins University, Baltimore, MD
8. Moffitt Cancer Center, Tampa, FL
9. Fred Hutchinson Cancer Research Center, Seattle, WA
10. Merck Research Laboratories, Kenilworth, NJ
11. Frederick National Laboratory for Cancer Research, Frederick, MD
12. National Cancer Institute, Bethesda, MD