Sexually Transmitted Diseases

• GSK Investigational Site — Birmingham, Alabama, United States
• GSK Investigational Site — Little Rock, Arkansas, United States
• GSK Investigational Site — Beverly Hills, California, United States
• GSK Investigational Site — Loma Linda, California, United States

• UCLA Center for HIV Prevention Research — Los Angeles, California, United States

• Tucson, Arizona, United States
• Beverly Hills, California, United States
• Mission Viejo, California, United States
• San Francisco, California, United States

• Rigshospitalet — Copenhagen, Denmark

• Gilead Sciences, S.L. — Madrid, Spain

• SGS Life Science Services Research Unit Stuivenberg — Antwerp, Belgium

• Fuyang CDC Office — Beijing, China

Not specified

• University of California, Los Angeles — Los Angeles, California, United States
• Northwestern University — Chicago, Illinois, United States
• John H. Stroger, Jr. Hospital of Cook County — Chicago, Illinois, United States
• Howard Brown Health Center — Chicago, Illinois, United States

• Maragwa District Hospital — Maragwa, Kenya
• Mathere North Hospital — Nairobi, Kenya
• Mbagathi District Hospital — Nairobi, Kenya
• Riruta City Council Hospital — Nairobi, Kenya