1. Department of Medicine, Karolinska University Hospital, Solna, Stockholm
2. Manchester Metropolitan University, School of Healthcare Science, Manchester, UK
3. Queen Mary University of London, Centre for Immunobiology, Blizard Institute, London, UK
4. Barts Health NHS Trust, Department of Gastroenterology, London, UK
5. King's College London, Faculty of Life Sciences & Medicine, Diabetes and Nutritional Sciences Division, London, UK