[1] Makerere Univ, Dept Med, Fac Med, Kampala, Uganda
[2] Makerere Univ, Dept Obstet & Gynaecol, Fac Med, Kampala, Uganda
[3] COMDIS, Res Dept, Malaria Consortium Africa, Kampala, Uganda
[4] Makerere Univ, Clin Epidemiol Unit, Fac Med, Kampala, Uganda