1. University of North Carolina at Chapel Hill, Lineberger Comprehensive Cancer Center, Chapel Hill, North Carolina
2. University of Maryland School of Medicine, Baltimore, Maryland
3. Northwestern University Feinberg School of Medicine, Chicago, Illinois
4. Veterans Administration Ann Arbor Health Care System, Ann Arbor, Michigan
5. University of Michigan Health System, Ann Arbor, Michigan
6. University of Southern California Keck School of Medicine, Los Angeles, California
7. Duke University School of Nursing, Durham, North Carolina
8. Moffitt Cancer Center, Tampa, Florida
9. University of Washington Medical Center, Seattle, Washington
10. Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania
11. University of Iowa Hospitals & Clinics, Iowa City, Iowa
12. Memorial Medical Center, Springfield, Illinois