1. Public Health Sciences Division and SWOG Statistics and Data Management Center, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
2. Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
3. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
4. Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, USA
5. Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
6. Department of Medicine, Division of Hematology, University of Washington, Seattle, WA, USA
7. Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
8. Department of Epidemiology, University of Washington, Seattle, WA, USA