1. Wisconsin Regional Primate Research Center, University of Wisconsin, Madison, Wisconsin 53715
2. Institute of Molecular Medicine, John Radcliffe Hospital—Headington, Oxford OX3 9DS, United Kingdom
3. Retroviral Pathogenesis Laboratory, AIDS Vaccine Program, SAIC Frederick, Frederick Cancer Research and Development Center, National Cancer Institute, Frederick, Maryland 21702
4. National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
5. Section on Statistical Genetics, Department of Biostatistics and Clinical Nutrition Research Center, University of Alabama—Birmingham, Birmingham, Alabama 35294
6. Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710
7. New England Regional Primate Research Center, Southborough, Massachusetts 01772
8. Northwestern University Medical School, Chicago, Illinois 60611-3010
9. Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia 30322
10. Epimmune Inc., San Diego, California 92121
11. Department of Pathology and Laboratory Medicine, University of Wisconsin Medical School, Madison, Wisconsin 53706