1. Leukemia Program, Cleveland Clinic Taussig Cancer Institute, Cleveland, OH;
2. Southwest Oncology Group (SWOG) Study Statistical Center, Seattle, WA;
3. H. Lee Moffitt Cancer Center, Tampa, FL;
4. Seattle Cancer Care Alliance, Seattle, WA;
5. University of Rochester, Rochester, NY;
6. University of Washington, Seattle, WA;
7. University of New Mexico Cancer Center, Albuquerque, NM; and
8. Fred Hutchinson Cancer Research Center, Seattle, WA