1. Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Department of Health and Human Services; Bethesda Maryland
2. Division of Hematology, Medical Oncology and BMT; Department of Medicine, Georgia Regents University; Georgia
3. Office of Biostatistics Research, National Heart, Lung and Blood Institute, National Institutes of Health, Department of Health and Human Services; Bethesda Maryland
4. Medical Oncology Branch, National Cancer Institute, National Institutes of Health, Department of Health and Human Services; Bethesda Maryland
5. Department of Laboratory Medicine, Clinical Research Center, National Institutes of Health, Department of Health and Human Services; Bethesda Maryland
6. Department of Transfusion Medicine, Clinical Research Center, National Institutes of Health, Department of Health and Human Services; Bethesda Maryland