University of Exeter, University of Exeter - Health Economics Group, University of Oxford, Office for Health Improvement and Disparities, London School of Hygiene & Tropical Medicine - Department of Public Health, Environments and Society, London School of Hygiene & Tropical Medicine, University of Cambridge - School of Clinical Medicine, University of Cambridge, University College London - Great Ormond Street Institute of Child Health, University of Cambridge, University of Cambridge - MRC Epidemiology Unit, London School of Hygiene & Tropical Medicine, University of Hertfordshire, University of Cambridge - MRC Epidemiology Unit, University of Cambridge - MRC Epidemiology Unit, University of Cambridge and London School of Hygiene and Tropical Medicine

University of Cambridge - MRC Epidemiology Unit, University of Glasgow - Institute of Health and Wellbeing, University College London - Great Ormond Street Institute of Child Health, London School of Hygiene & Tropical Medicine - Clinical Trials Unit, University of Bath - Department of Social & Policy Sciences, University of Glasgow - School of Medicine, Dentistry and Nursing, University of Cambridge - MRC Epidemiology Unit and University of Cambridge - MRC Epidemiology Unit