[1] Royal Free Hosp, UCL Inst Liver & Digest Hlth, London, England
[2] UCL, London, England
[3] Odense Univ Hosp, Dept Gastroenterol & Hepatol, Odense, Denmark
[4] Royal Free London NHS Fdn Trust, Dept Cellular Pathol, London, England
[5] UCL, UCL Inst Liver & Digest Hlth, London, England
[6] Fdn IRCCS Casa Sollievo Sofferenza, Pathol Unit, San Giovanni Rotondo, FG, Italy
[7] Sheila Sherlock Liver Unit, London, England