1. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA;
2. Department of Medicine, Division of Hematology, University of Washington, Seattle;
3. Department of Immunology, University Medical Center Rotterdam, Erasmus MC, The Netherlands;
4. HematoLogics, Seattle, WA;
5. Department of Pediatrics, University of Washington, Seattle;
6. Department of Medicine, Division of Medical Oncology, University of Washington, Seattle