1. Division of Diabetes, Endocrinology and Gastroenterology; School of Medical Sciences; Faculty of Biology, Medicine and Health; The University of Manchester and Manchester Academic Health Sciences Centre; Manchester UK
2. Wrightington, Wigan and Leigh NHS Trust; Wigan UK
3. Salford Royal NHS Foundation Trust; Salford UK
4. Faculty of Medicine and Health; Leeds University School of Healthcare; University of Leeds; Leeds UK