[1] Prince Leopold Inst Trop Med, Dept Biomed Sci, Antwerp, Belgium
[2] Med Mission Inst, Wurzburg, Germany
[3] Inst Res Hlth Sci IRSS URCN, Clin Res Unit, Nanoro, Burkina Faso
[4] Univ Manchester, Fac Biol Med & Hlth, Inst Canc Sci, Manchester, Lancs, England
[5] Univ Manchester, Ctr Biostat, Fac Biol Med & Hlth, Manchester, Lancs, England
[6] Med Res Council Unit MRC, Banjul, Gambia
[7] London Sch Hyg & Trop Med, London, England
[8] Univ Liverpool, Liverpool Sch Trop Med, Liverpool, Merseyside, England
[9] Univ Liverpool, Inst Infect & Global Hlth, Liverpool, Merseyside, England
[10] Univ Amsterdam, Acad Med Ctr, Global Child Hlth Grp, Amsterdam, Netherlands