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. Department of Retrovirology, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
4. Royal Thai Army, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
5. Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
6. Human Vaccine Institute, Duke University School of Medicine, Durham, North Carolina, USA
7. Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA