1. UCL Institute for Liver and Digestive Health; Royal Free Hospital; London UK
2. Pathology Department; Minia University; El-Minia Egypt
3. Institute for Liver and Digestive Health; Royal Free London NHS Foundation Trust; London UK
4. Department of Cellular Pathology; University College Hospital; London UK
5. Academic Department of Surgery and Interventional Sciences; Royal Free Hospital; London UK
6. Department of Cellular Pathology; Royal Free London NHS Foundation Trust; London UK