1. Department of Public Health and Primary Care, Institute of Public Health, University of Cambridge School of Clinical Medicine, Cambridge, UK
2. MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge, UK
3. Cardiovascular Research Institute Maastricht School for Cardiovascular Diseases, Maastricht University, the Netherlands
4. Department of Internal Medicine, Maastricht University Medical Center, the Netherlands
5. Nuffield Department of Population Health, University of Oxford, Oxford, UK
6. Albertinen-Haus Centre for Geriatrics and Gerontology, University of Hamburg, Hamburg, Germany
7. Department of Behavioural Science and Health, Institute of Epidemiology and Health Care, University College London, England, UK
8. Cambridge Public Health, University of Cambridge, Cambridge, UK
9. NIHR Biomedical Research Centre at Moorfields Eye Hospital and UCL Institute of Ophthalmology, London, UK