1. Department of Chemistry, University of Oxford, Oxford, UK
2. Department of Pharmacology, Medical Sciences Division, University of Oxford, Oxford, UK
3. Department of Radiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
4. Department of Gastroenterology, University Hospital CHU of Liège, Liège, Belgium
5. Translational Gastroenterology Unit, Nuffield Department of Experimental Medicine, University of Oxford, Oxford, UK