[1] Univ Washington, Harborview Med Ctr, Sch Med, Dept Med, Seattle, WA 98104 USA
[2] Univ Washington, Sch Med, Dept Lab Med, Seattle, WA 98104 USA
[3] Univ Washington, Sch Med, Dept Global Hlth, Seattle, WA 98104 USA
[4] Univ Washington, Sch Publ Hlth, Dept Med, Seattle, WA 98104 USA
[5] Univ Washington, Sch Publ Hlth, Dept Lab Med, Seattle, WA 98104 USA
[6] Univ Washington, Sch Publ Hlth, Dept Global Hlth, Seattle, WA 98104 USA
[7] Fred Hutchinson Canc Res Ctr, Stat Ctr HIV AIDS Res & Prevent, Seattle, WA 98104 USA
[8] Univ Alabama, Dept Med, Birmingham, AL 35294 USA
[9] San Francisco Dept Publ Hlth, San Francisco, CA USA
[10] Johns Hopkins Univ, Sch Med, Dept Pathol, Baltimore, MD 21205 USA
[11] Asociac Civil Impacta Salud & Educ IMPACTA, Lima, Peru
[12] Ctr Infect Dis Res Zambia, Lusaka, Zambia
[13] Univ Witwatersrand, Reprod Hlth Unit, Johannesburg, South Africa
[14] UCL, London, England