1. National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIH), Bethesda, MD;
2. Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD;
3. AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD;
4. Dental Clinical Research Core, National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD;
5. Hematology Section, Department of Laboratory Medicine, Clinical Center, NIH, Bethesda, MD; and
6. Cytheris Inc., Subsidiary of Cytheris S.A., Issy les Moulineaux, France