1. Fred Hutchinson Cancer Research Center, Seattle, WA;
2. University of Washington, Seattle;
3. Rocky Mountain Cancer Center, Denver, CO;
4. University of Kentucky, Lexington;
5. Wayne State University, Detroit, MI;
6. Loma Linda University, CA;
7. Texas Transplant Institute, San Antonio;
8. University of Texas Health Science Center, Houston;
9. Virginia-Mason Medical Center, Seattle, WA;
10. University of Michigan, Ann Arbor;
11. Duke University Medical Center, Durham, NC; and
12. University of California, Los Angeles