Biology of bile acids in health and disease : proceedings of Falk Symposium no. 120, held in The Hague, The Netherlands, on October 12-13, 2000 - the 16th International Bile Acid Meeting - Berge Henegouwen, G. P. van; Keppler, D.; Leuschner, Ulrich; Paumgartner, G.; Stiehl, A. (Falk symposium, 2001)