1. Newnham CollegeUniversity of CambridgeCambridge UK
2. Division of Biological AnthropologyDepartment of Archaeology and AnthropologyUniversity of CambridgeCambridge UK
3. Childhood Nutrition Research Centre, UCL Institute of Child HealthLondon UK
4. Division of Respiratory MedicineThe Hospital for Sick ChildrenToronto ON Canada
5. CRONICAS Centre of Excellence in Chronic Diseases and Department of MedicineSchool of Medicine, Universidad Peruana Cayetano HerediaLima Peru
6. Centre of Paediatric Epidemiology and BiostatisticsUCL Institute of Child HealthLondon UK