1. Department of Diabetes King's College NHS Foundation Trust London UK
2. King's Health Partners' Institute of Diabetes Endocrinology and Obesity London UK
3. Department of Diabetes, School of Life Course Sciences King's College London London UK
4. Nuffield Department of Primary Care Health Sciences University of Oxford Oxford UK
5. Bariatric and Metabolic Surgery King's College Hospital London UK
6. Department of Clinical and Experimental Medicine University of Surrey Guildford UK