[1] Univ Montreal, Hop St Luc, Ctr Hosp, Ctr Rech,Div Hepatol, Montreal, PQ H2X 1P1, Canada
[2] Glaxo Wellcome Inc, Durham, NC USA
[3] Dalhousie Univ, Queen Elisabeth II Hlth Sci Ctr, Div Gastroenterol, Halifax, NS, Canada
[4] Univ Toronto, Toronto Hosp, Div Gastroenterol, Toronto, ON, Canada