5Brocklehurst P. Interventions for reducing the risk of mother-to-child transmission of HIV infection [ J ]. Cochrane Database Syst Rev,2002 :CD000102
6Read JS, Newell MK. Efficacy and safety of cesarean delivery for prevention of mother-to-child transmission of HIV-1 [ J ]. Cochrane Database Syst Rev ,2005,19 : CD005479
7Fawzi W, Msamanga G, Spiegelman D, et al. Transmission of HIV-1 through breast feeding among women in Dares Salaam,Tanzania[ J]. Acquir Immune Defic Syndr,2002, 31:331-338
8Rousseau CM, Nduati RW, Richardson BA, et al. Longitudinal analysis of human immunodeficiency virus type 1 RNA in breast milk and of its relationship to infant infection and maternal disease [ J ]. J Infect Dis, 2003, 187 : 741-747
9Van DE, Kulier R,Gulmezoglu AM,et al. Vitamin A supplementation during pregnancy [ J ]. Cochrane Database Syst Rev,2002 : CD001996
10Wiysonge CS, Shey MS, Sterne JAC, et al. Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection [ J ]. Cochrane Database Syst Rev ,2005,19 : CD003648
6[2]Mock PA,Shaffer N,Bhadrakom C,et al.Maternal viral load and timing of mother-to-child HIV transmission,Bangkok,Thailand.Bangkok Collaborative Perinatal HIV Transmission Study Group.AIDS,1999,13(3):407
7[3]Burns DN,Landesman S,Wright DJ,et al.Influence of other maternal variables on the relationship between maternal virus load and mother-to-infant transmission of human immunodeficiency virus type 1.J Infect Dis,1997,175(5):1206
8[4]Mandelbrot L,Mayaux MJ,Bongain A,et al.Obstetric factors and mother-to-child transmission of human immunodeficiency virus type 1:the French perinatal cohorts.SEROGEST French Pediatric HIV Infection Study Group.Am J Obstet Gynecol,1996,175(3 pt 1):661
9[6]Semba RD.The role of vitamin A and related retinoids in immune function.Nutr Reviews,1998,56(1 pt 2):S38
10[7]Duliege AM,Amos CT,Felton S,et al.Birth order,delivery route,and concordance in the transmission of human immunodeficiency virus type 1 from mothers to twins.International Registry of HIV-Exposed Twins.J Pediatr,1995,126(4):625
