1. KEMRI-Wellcome Trust Research Programme; Kenya
2. Section of Paediatrics and Centre for Global Health Research; Imperial College; London UK
3. MRC Human Nutrition Research; Elsie Widdowson Laboratory; Cambridge UK
4. Department of Medicine, Faculty of Medicine and Health Science; University of East Anglia; Norwich UK
5. Baraka Health Centre; German Doctors Nairobi; Nairobi Kenya
6. MRC Keneba; The Gambia
7. Nuffield Department of Clinical Medicine; University of Oxford; Oxford UK