1Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD USA
2NHLBI/NIH, Rockville, MD, USA
3National Heart, Lung, and Blood Institute, Hematology Branch, National Institutes of Health, Bethesda, MD, USA
4CC/DLM/Hematology, National Institutes of Health, Bethesda, MD, USA
5Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, USA
6National Institutes of Health, National Cancer Institute, Bethesda, MD, USA
7NCI, Bethesda, MD, USA
8Department of Transfusion Medicine, Clinical Center, NIH, Bethesda, MD, USA