Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, University of Oxford, University of KwaZulu-Natal - Department of Public Health Medicine, Department of Health Metrics Sciences, University of Washington, University of Oxford, University of Washington - Department of Health Metrics Sciences and Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford