1. Paediatrics and Child Health Research Group, , Malawi-Liverpool Wellcome Research Programme P.O. Box 30096, Chichiri, Blantyre, Malawi
2. Department of Paediatrics and Child Health, Kamuzu University of Health Sciences, Blantyre, Malawi
3. The Childhood Acute Illness & Nutrition (CHAIN) Network , Nairobi, Kenya
4. Departments of Global Health, Medicine, Pediatrics and Epidemiology, University of Washington , Seattle, WA, USA
5. Department of Medicine, , University of Oxford , Oxford, UK
6. Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
7. Department of Clinical Sciences, , Liverpool School of Tropical Medicine , Liverpool, UK
8. Amsterdam Center for Global Health, University of Amsterdam & Emma Children's Hospital, Amsterdam University Medical Centers , Amsterdam, The Netherlands
9. Amsterdam Institute for Global Health and Development, University of Amsterdam, Amsterdam University Medical Centers , Amsterdam, The Netherlands