1. Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
2. Academic Unit of Gastroenterology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield S10 2JF, UK
3. Division of Clinical Medicine, Faculty of Medicine and Population Health, The University of Sheffield Medical School, Sheffield S10 2RX, UK
4. Department of Pathophysiology and Transplantation, University of Milan, 20122 Milan, Italy
5. Department of Clinical Radiology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield S10 2JF, UK