1. Hematology-Oncology Service, Department of Medicine and
2. Department of Pathology and Area Laboratory Services, Walter Reed Army Medical Center, Washington, DC;
3. Hematology-Oncology Service, Department of Medicine, Womack Army Medical Center, Fort Bragg, NC;
4. Department of Clinical Investigation, Walter Reed Army Medical Center, Washington, DC; and
5. Genetics Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD