1. Newnham College, University of Cambridge; Cambridge United Kingdom
2. Division of Biological Anthropology, Department of Archaeology and Anthropology; University of Cambridge; Cambridge United Kingdom
3. Division of Respiratory Medicine; The Hospital for Sick Children; Toronto Ontario Canada
4. CRONICAS Centre of Excellence in Chronic Diseases and Department of Medicine; School of Medicine, Universidad Peruana Cayetano Heredia; Lima Peru
5. Centre for Paediatric Epidemiology and Biostatistics; Institute of Child Health, University College London; London United Kingdom
6. Childhood Nutrition Research Centre; Institute of Child Health, University College London; London United Kingdom