University College London - Institute for Global Health, University of Edinburgh - School of Informatics, University College London - Institute for Global Health, Association for Long Term Existence and Resilience (ALTER), Science and Technology Facilities Council, Centre for Enabling EA Learning & Research, Retired, University of Southampton - MRC Lifecourse Epidemiology Unit, University Hospital Southampton NHS Foundation Trust, University College London - Institute for Global Health, Rethink Priorities, Queen Mary University of London - Institute of Population Health Sciences, University of Southampton - School of Primary Care and Population Sciences, University of Leicester - Department of Health Sciences, Huazhong University - Institute of State Governance, University of Southampton - School of Primary Care, Population Sciences and Medical Education, University College London - Department of Applied Health Research, Retired, University of Southampton - School of Primary Care, Population Sciences and Medical Education, University College London - Institute for Global Health, University of Oxford - Future of Humanity Institute, East London Health and Care Partnership - WEL Clinical Commissioning Groups, University of York - Centre for Health Economics, London School of Hygiene & Tropical Medicine, University College London - Department of Applied Health Research and University College London - Department of Applied Health Research