1. Radcliffe Primary Care Building, Nuffield Department of Primary Care Health Sciences University of Oxford Oxford UK
2. School of Medicine and Dentistry Griffith University Brisbane Queensland Australia
3. Nuffield Department of Primary Care Health Sciences University of Oxford Oxford UK
4. NIHR Oxford Biomedical Research Centre Oxford University Hospitals NHS Foundation Trust Oxford UK
5. NIHR Oxford Biomedical Research Centre, Nuffield Department of Population Health University of Oxford Oxford UK
6. Division of Epidemiology and Public Health, School of Medicine University of Nottingham Nottingham UK
7. Oxford University Hospitals NHS Foundation Trust Oxford UK
8. Royal Free London NHS Foundation Trust London UK
9. United Nations World Food Programme Cox's Bazar Bangladesh
10. Faculty of Medical Sciences, Population Health Sciences Institute Newcastle University Newcastle upon Tyne UK
11. Nuffield Department of Population Health University of Oxford Oxford UK