1. KEMRI/Wellcome Trust Research Programme, Kilifi, Kenya
2. MRC International Nutrition Group, London School of Hygiene and Tropical Medicine, London, UK
3. Centre for Clinical Vaccinology & Tropical Medicine, University of Oxford, Oxford, UK
4. Ministry of Health– Kilifi District Hospital, Kilifi, Kenya
5. Medical Research Council Laboratories, MRC Keneba, Keneba, The Gambia