1. University Hospitals Seidman Cancer Center, Case Western Reserve University, Cleveland, Ohio.
2. Blanchard Valley Regional Cancer Center, Findlay, Ohio.
3. University of Southern California-Keck School of Medicine, Los Angeles, California.
4. University Hospitals of Cleveland, Cleveland, Ohio.
5. University of Michigan, Ann Arbor, Michigan.
6. University of Washington, Seattle, Washington.
7. Wayne State University School of Medicine, Detroit, Michigan.
8. Memorial Sloan Kettering Cancer Center, Scarsdale, New York.
9. Mayo Clinic, Rochester, Minnesota.
10. Henry Ford Hospital and Medical Center, Detroit, Michigan.
11. Sarasota Radiation Therapy Center, Sarasota, Florida.
12. University Hospitals Case Medical Center, Cleveland, Ohio.
13. University of Michigan Comprehensive Cancer Center, Ann Arbor, Michigan.