1. Institute for Liver and Digestive Health, University College London; London United Kingdom
2. Department of Pathology; University College London; London United Kingdom
3. Department of Pharmacology; University of Pennsylvania; Pittsburgh Pennsylvania
4. Department of Morphology and Molecular Pathology; University of Leuven; Leuven Belgium
5. Division of Gastroenterology; Duke University Medical Center; Durham NC
6. Department of Gastroenterology and Hepatology; Guy's and St Thomas' Hospital, NHS Foundation Trust; London United Kingdom