[1] Erasmus Univ Hosp Rotterdam, Dept Gastroenterol & Hepatol, Rotterdam, Netherlands
[2] Toronto Hosp, Div Gastroenterol, Toronto, ON M5T 2S8, Canada
[3] Med Acad Warsaw, Dept Hepatol & Infect Dis, Warsaw, Poland
[4] Univ Sydney, Storr Liver Unit, Westmead Hosp, Sydney, NSW, Australia
[5] Univ Hosp Montreal, Dept Gastroenterol & Hepatol, Montreal, PQ, Canada
[6] Royal Free Hosp, Dept Histopathol, London NW3 2QG, England
[7] Glaxo Wellcome Res & Dev Ltd, Greenford, Middx, England