London School of Hygiene and Tropical Medicine, Northumbria University, London School of Hygiene & Tropical Medicine, London School of Hygiene & Tropical Medicine, London School of Hygiene & Tropical Medicine - Medical Research Council Unit: The Gambia, London School of Hygiene & Tropical Medicine, Rice University, Rice University, Rice University, Aga Khan University, Rice University, Muhimbili University of Health and Allied Sciences, Ifakara Health Research and Development Centre, Kamuzu University of Health Sciences, Rice University, Kamuzu Central Hospital, Rice University, University of Lagos - Department of Paediatrics, London School of Hygiene & Tropical Medicine, Rice University, Kenya Medical Research Institute (KEMRI) - Health Economics Research Unit, London School of Hygiene & Tropical Medicine, Rice University, Rice University and London School of Hygiene & Tropical Medicine - MARCH Centre