1. Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois.
2. Department of Immunology/Microbiology, Rush University Medical Center, Chicago, Illinois.
3. Department of Virosciences, Erasmus Medical Center, Erasmus University, Rotterdam, the Netherlands.
4. Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
5. Office of AIDS Research, Division of Program Coordination, Planning, and Strategic Initiatives, Office of the Director, U.S. National Institutes of Health, U.S. Department of Health and Human Services, Philadelphia, Pennsylvania.
6. Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
7. Department of Medical Microbiology & Immunology, University of California, Davis, California.
8. Vaccine Research Program, Division of AIDS, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland.
9. Institut de Recerca de la SIDA IrsiCaixa i Unitat VIH, Universitat Autònoma de Barcelona, Universitat de Vic, Catalonia, Spain.
10. HJF-DAIDS, A Division of the Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Contractor to NIAID, NIH, DHHS, Bethesda, Maryland.