[1] Univ Calif San Francisco, Dept Gastroenterol, San Francisco, CA 94143 USA
[2] Thomas Jefferson Univ, Jefferson Med Coll, Div Gastroenterol & Hepatol, Philadelphia, PA 19107 USA
[3] Cedars Sinai Med Ctr, Dept Hepatol, Los Angeles, CA 90048 USA
[4] Gilead Sci Inc, Clin Res, Foster City, CA 94404 USA
[5] Toronto Western Hosp, Dept Hepatol, Toronto, ON M5T 2S8, Canada
[6] Univ Klinikum Eppendorf, Dept Med, Hamburg, Germany
[7] GlaxoSmithKline, Greenford, Middx, England