1. Manchester Diabetes Centre, Manchester Academic Health Science Centre, Manchester National Institute Health Research Biomedical Research Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester, U.K.;
2. Cardiovascular Medicine Research Group, School of Biomedicine, University of Manchester, Manchester, U.K.;
3. Department of Renal Services, Manchester Royal Infirmary, Manchester, U.K.;
4. School of Medicine, Faculty of Medical and Human Sciences, University of Manchester, Manchester, U.K.;
5. Department of Surgery, Texas A&M Health Science Center College of Medicine and Scott and White Hospital, Temple, Texas.