1. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA; and
2. Department of Medicine, Division of Hematology,
3. Department of Epidemiology,
4. Department of Medicine, Residency Program,
5. Department of Medicine, Division of Medical Oncology,
6. Department of Laboratory Medicine, Division of Hematopathology, and
7. Department of Pediatrics, University of Washington, Seattle, WA