*Department of Global Health, University of Washington, Seattle, WA;†Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA;‡HIV-NAT, Thai Red Cross AIDS Research Centre, Bangkok, Thailand;§The Kirby Institute, University of New South Wales, Sydney, Australia;‖GlaxoSmithKline (Thailand) Ltd., Bangkok, Thailand;¶TREAT Asia/amfAR-The Foundation for AIDS Research, Bangkok, Thailand; and#Department of Medicine, University of California, San Francisco, San Francisco, CA.