[1] Med Univ Vienna, Dept Internal Med 3, Div Gastroenterol & Hepatol, A-1090 Vienna, Austria
[2] Med Univ Graz, Dept Internal Med, Div Gastroenterol & Hepatol, Lab Expt & Mol Hepatol, Graz, Austria
[3] Baylor Coll Med, Dept Mol & Cellular Biol, Houston, TX 77030 USA