1. Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA.
2. Department of Epidemiology and Biostatistics, The George Washington University, Washington, District of Columbia, USA.
3. Department of Virosciences, Erasmus Medical Center, Erasmus University Rotterdam, Rotterdam, the Netherlands.
4. Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
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, Bethesda, Maryland, USA.
6. Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
7. Department of Medical Microbiology and Immunology, University of California, Davis, Davis, California, USA.
8. Vaccine Research Program, Division of AIDS, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA.
9. Institut de Recerca de la SIDA IrsiCaixa i Unitat VIH, Universitat Autònoma de Barcelona, Universitat de Vic, Catalonia, Spain.
10. Department of Medicine, University of Colorado Denver, Denver, Colorado, USA.
11. Center for Research in Infectious Diseases, National Institute of Respiratory Diseases, Mexico City, Mexico.
12. Osel, Inc., Mountain View, California, USA.
13. Columbus Technologies and Services, Inc., NIAID/NIH, Bethesda, Maryland, USA.
14. Division of Gerontology, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA.