1. National Human Genome Research Institute, Bethesda, MD
2. Clinical Pathology Department, Warren G. Magnuson Clinical Center, NIH, Bethesda, MD
3. Food and Drug Administration Center for Biological Evaluation and Research, Bethesda, MD
4. Hematology Service, Warren G. Magnuson Clinical Center, NIH, Bethesda, MD
5. National Heart, Lung, and Blood Institute, 5 Research Court, Rockville, MD
6. Surgery Branch, NCI, Bethesda, MD