1. Department of Endocrinology and Diabetes, Manchester University NHS Foundation Trust , Manchester , UK
2. Department of Endocrinology and Diabetes, University Hospitals of North Staffordshire NHS Trust , Stoke-on-Trent , UK
3. Impact Accelerator Unit, School of Medicine, Keele University , Staffordshire , UK
4. Department of Clinical Biochemistry, Manchester University Foundation Trust , Manchester , UK