Abstract
1American Registry of Pathology, Department of Infectious and Parasitic Disease Pathology, Armed Forces Institute of Pathology, Washington, D.C. 20306-6000
2Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, Frederick, Maryland 21710
3HIV Clinical Program, Georgetown University Hospital, Washington, D.C. 20007-2197
4Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, Maryland 20892