4Kigbu JH, Nyango DD. A critical look on condoms [ J ]. Niger J Med,2009,18 (4) :354-359.
5UNAIDS. UNAIDS report on the global aids epidemic [ R ]. Geneva: UNAIDS,2012.
6Gray RH, Wawer MJ, Brookmeyer R, et al. Probability of HIV-1 transmission per coital act in monogamous, heterosexual, HIV-1- discordant couples in Rakai, Uganda [ J ]. Lancet, 2001,357 (9263) : 1149-1153.
7UNAIDS. AIDS epidemic update [ R]. Geneva: UNAIDS,2007.
8UNAIDS. AIDS epidenmic update 2009 [ R ]. Geneva: UNAIDS, 2009.
9UNAIDS. Uganda: HIV models of transmission and prevention response analysis[ R]. Geneva:UNAIDS,2009.
10Guthrie BL, de Bruyn G, Farquhar C. HIV-l-discordant couples in sub-Saharan Africa: explanations and implications for high rates of discordancy [ J ]. Curr HIV Res, 2007,5 (4) :416 -429.
