[1] Kings Coll Hosp London, Inst Liver Studies, ENETS Ctr Excellence, London SE5 8RX, England
[2] Hampshire Hosp NHS Trust, Dept Gastroenterol, Basingstoke, Hants, England
[3] Kings Coll Hosp London, Inst Liver Studies, Hepatopancreatobiliary Surg, London SE5 8RX, England
[4] Kings Coll Hosp London, Inst Liver Studies, Dept Histopathol, London SE5 8RX, England
[5] Univ Hosp Lewisham, Dept Gastroenterol, London, England