1. U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
2. Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
3. Institute for HIV Research, University Hospital, University Duisburg-Essen, Essen, Germany
4. Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
5. Department of Retrovirology, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
6. Department of Disease Control, Ministry of Public Health, Nonthaburi, Thailand
7. Vaccine Trial Centre, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
8. HPSTD Clinic, University Hospital, University Duisburg-Essen, Essen, Germany
9. Massachusetts General Hospital, Boston, Massachusetts, USA