1. Department of Medicine, Division of Hematology, University of Washington, Seattle, WA, USA
2. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
3. Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
4. Pfizer Inc, New York, NY, USA
5. Department of Laboratory Medicine & Pathology, University of Washington, Seattle, WA, USA
6. Department of Epidemiology, University of Washington, Seattle, WA, USA