1. US 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, Inc., Bethesda, Maryland, USA
3. Institute of Human Virology, University of Maryland School of Medicine, Baltimore, Maryland, USA
4. Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
5. SEARCH, Thai Red Cross Research Centre, Bangkok, Thailand
6. Department of Global Health, Amsterdam University Medical Centers, University of Amsterdam, and Amsterdam Institute for Global Health and Development, Amsterdam, The Netherlands