1. Department of Gastroenterology, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
2. Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, UK
3. Department of Radiology and Research Institute of Radiology, Asan Medical Center & University of Ulsan College of Medicine, Seoul, Korea
4. Department of Radiology, The Christie NHS Foundation Trust, Manchester, UK
5. Department of Natural Sciences, University of Chester, Chester, UK