1. Institute of Metabolism and Systems Research, University of Birmingham, UK
2. Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
3. Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners
4. Department of Endocrinology, Queen Elizabeth Hospital
5. NIHR Birmingham Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK