1. Leicester Real World Evidence Unit, Diabetes Research Centre, University of Leicester, Leicester, LE5 4PW, UK
2. Diabetes Research Centre, Leicester General Hospital, University of Leicester, Leicester, LE5 4PW, UK
3. NIHR Leicester Biomedical Research Centre (BRC), University Hospitals of Leicester NHS Trust and University of Leicester, Leicester, LE5 4PW, UK
4. Office for National Statistics, Newport, NP10 8XG, UK
5. Primary Care Research Centre, Faculty of Medicine, University of Southampton, SO16 5ST, UK
6. Department of Respiratory Sciences, University of Leicester, Leicester, LE1 9HN, UK
7. Institute of Health Informatics, University College London, London, NW1 2DA, UK
8. Harvard TH Chan School of Public Health, Harvard University, Boston, MA 02115, USA
9. Nuffield Department of Population Health, Big Data Institute, University of Oxford, Oxford, OX3 7LF, UK
10. MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0QQ, UK