[1] UCL, Sch Med, Dept Infect, Ctr Infect Dis & Int Hlth, London W1N 8AA, England
[2] Univ KwaZulu Natal, Dept Pediat & Child Hlth, Durban, South Africa
[3] Univ Teaching Hosp, Dept Obstet & Gynecol, Lusaka, Zambia
[4] Univ Teaching Hosp, UNZA UCLMS Res & Training Project, Lusaka, Zambia
[5] Univ Cape Town, Dept Med, Lung Inst, ZA-7925 Cape Town, South Africa
[6] Klinikum Univ Munich LMU, Dept Trop Med & Infect Dis, Munich, Germany