[1] John Cochran VA Med Ctr, St Louis, MO USA
[2] St Louis Univ, Sch Med, Div Gastroenterol & Hepatol, St Louis, MO USA
[3] Vanderbilt Univ, Med Ctr, Div Liver Transplantat & Hepatobiliary Surg, Nashville, TN USA
[4] Univ Michigan, Div Gastroenterol & Hepatol, Ann Arbor, MI 48109 USA
[5] Univ So Calif, Keck Sch Med, Div Gastrointestinal & Liver Dis, Los Angeles, CA 90033 USA
[6] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[7] Harvard Univ, Sch Med, Boston, MA USA
[8] Univ Calif Irvine, Div Gastroenterol, Irvine, CA USA
[9] VA Long Beach Healthcare Syst, Gastroenterol Serv, Long Beach, CA USA
[10] Mayo Clin, Coll Med, Div Gastroenterol & Hepatol, Rochester, MN USA
[11] Univ Chicago, Gastroenterol Sect, Chicago, IL 60637 USA
[12] Univ Chicago, Ctr Liver Dis, Chicago, IL 60637 USA
[13] Oregon Hlth & Sci Univ, Portland, OR 97201 USA
[14] Rush Univ, Med Ctr, Chicago, IL 60612 USA