1 Foot Ulcer Trials Unit, Department of Diabetes and Endocrinology, Nottingham University Hospitals Trust, Nottingham NG5 1PH, UK. Electronic address: william.jeffcoate@gmail.com.
2 National Cardiovascular Intelligence Network, Public Health England, London, UK.
3 Diabetic Foot Unit, Department of Diabetes and Endocrinology, Imperial College Healthcare NHS Trust, London, UK; NHS England, London, UK.
4 National Diabetes Audit, NHS Digital and Diabetes UK, London, UK.