1. Royal Free Hospital and the UCL Institute of Liver and Digestive Health; Sheila Sherlock Liver Centre; London UK
2. University College London Hospitals NHS Foundation Trust; Clinical Microbiology and Virology; 5th Floor Central 250 Euston Road London UK NW1 2PG
3. University of Leicester; Department of Health Sciences; University Road Leicester UK LE1 7RH
4. Royal Free Campus, University College London; Rowland Hill Street Hampstead London UK NW3 2PF
5. University of Glasgow; HEHTA; University Ave Glasgow G12 8QQ Glasgow UK
6. PSC Support; PO Box 6945 London UK
7. Coventry University; Centre for Trust, Peace and Social Relations; Coventry UK
8. Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital; Cochrane Hepato-Biliary Group; Blegdamsvej 9 Copenhagen Denmark DK-2100
9. 'Sechenov' First Moscow State Medical University; Center for Evidence-Based Medicine; Pogodinskja st. 1\1 Moscow Russian Federation 119881
10. University College London; Division of Surgery and Interventional Science; London UK NW3 2QG