1. Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, United Kingdom
2. National Institute of Health Research Nottingham Biomedical Research Centre at Nottingham University, Hospitals National Health Service Trust and the University of Nottingham, Nottingham, United Kingdom
3. Sir Peter Mansfield Imaging Centre, School of Physics and Astronomy, University of Nottingham, Nottingham, United Kingdom
4. Motilent Ltd, London, United Kingdom
5. Centre for Medical Imaging, Division of Medicine, University College London, United Kingdom
6. Department of Radiology, Nottingham University Hospitals, Nottingham, United Kingdom