Sexually Transmitted Diseases, Viral

• Perinatal HIV Research Unit — Johannesburg, Gauteng, South Africa
• Aurum Institute for Health Research — Klerksdorp, North West, South Africa
• Desmond Tutu HIV Centre — Cape Town, Western Cape, South Africa

• IFER — Buenos Aires, Argentina

Not specified

• Department of Infectious Diseases, Aarhus University Hospital — Aarhus, Denmark

• Dept. of Psychiatry, Stanford University — Stanford, California, United States

• NDRI South Bronx Field Office — The Bronx, New York, United States

• St George's Vaccine Institute, St George's University of London — London, England, United Kingdom