1. NIHR Nottingham Biomedical Research Centre (BRC), Nottingham University Hospitals NHS Trust and University of Nottingham, Nottingham, UK
2. Sir Peter Mansfield Imaging Centre, School of Physics and Astronomy, University of Nottingham, Nottingham, UK
3. Department of Radiology, Nottingham University Hospitals NHS Trust, Nottingham, UK
4. Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
5. Department of Radiology, Cambridge University Hospitals NHS Trust, Cambridge, UK