1. Wellcome Trust–Medical Research Council Institute of Metabolic Science, University of Cambridge, Cambridge, United Kingdom.
2. Wolfson Diabetes and Endocrine Clinic, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom.
3. Department of Medicine, University of Calgary, Calgary, Alberta, Canada.
4. Department of Public Health and Primary Care, THIS Institute, University of Cambridge, Cambridge, United Kingdom.
5. Department of Medicine, Norwich Medical School, University of East Anglia, Norwich, United Kingdom.