1. Division of Surgery and Interventional Science; University College London; London UK
2. Department of Therapy; I.M. Sechenov First Moscow State Medical University; Moscow Russian Federation
3. Department of Health Sciences; University of Leicester; Leicester UK
4. General and Colorectal Surgery; Ealing Hospital and Imperial College, London; Northwood UK
5. Frances Bardsley Academy; London UK
6. Surgical & Interventional Trials Unit (SITU); UCL Division of Surgery & Interventional Science; London UK
7. Acute Medicine; Barts and The London NHS Trust; London UK
8. Centre for Trust, Peace and Social Relations; Coventry University; Coventry UK
9. PSC Support; London UK
10. Sheila Sherlock Liver Centre; Royal Free Hospital and the UCL Institute of Liver and Digestive Health; London UK