[1] Hannover Med Sch, Dept Gastroenterol Hepatol & Endocrinol, D-30625 Hannover, Germany
[2] Mayo Clin, Coll Med, Div Gastroenterol & Hepatol, Rochester, MN USA
[3] Dartmouth Med Sch, Dept Pathol, Lebanon, NH USA
[4] Univ Vermont, Coll Med, Dept Med, Burlington, VT 05405 USA
[5] Kings Coll London, Pediat Liver Ctr, Sch Med, Kings Coll Hosp, London WC2R 2LS, England
[6] Kings Coll London, Inst Liver Studies, Sch Med, Kings Coll Hosp, London WC2R 2LS, England
[7] Baylor Coll Med, Houston, TX 77030 USA