[1] NHLBI, Hematol Branch, NIH, Bethesda, MD 20892 USA
[2] NHLBI, Off Biostat Res, Bethesda, MD 20892 USA
[3] Ctr Clin, Dept Pharm, Bethesda, MD USA
[4] NHLBI, Flow Cytometry Core Facil, Bethesda, MD 20892 USA
[5] NCI, Pathol Lab, NIH, Bethesda, MD 20892 USA
[6] NCI, Metab Branch, CCR, Bethesda, MD 20892 USA