[1] New England Res Inst, Watertown, MA 02472 USA
[2] NIDDKD, Div Digest Dis & Nutr, NIH, Dept Hlth & Human Serv, Bethesda, MD 20892 USA
[3] NIDDKD, Off Director, NIH, Dept Hlth & Human Serv, Bethesda, MD 20892 USA
[4] Virginia Commonwealth Univ, Med Ctr, Hepatol Sect, Richmond, VA USA
[5] Univ Colorado Denver, Div Gastroenterol & Hepatol, Aurora, CO USA
[6] Univ So Calif, Hepatitis Res & Treatment Ctr, Los Angeles, CA USA
[7] Univ Michigan, Dept Internal Med, Div Gastroenterol, Ann Arbor, MI 48109 USA
[8] Univ Texas SW Med Ctr Dallas, Div Digest & Liver Dis, Dallas, TX 75390 USA
[9] Univ Massachusetts, Sch Med, Dept Med, Worcester, MA USA
[10] St Louis Univ, Sch Med, Div Gastroenterol & Hepatol, St Louis, MO USA
[11] Univ Calif Irvine, Dept Med, Irvine, CA 92717 USA
[12] Massachusetts Gen Hosp, Gastrointestinal Unit, Med Serv, Boston, MA 02114 USA
[13] NIDDKD, Liver Dis Branch, NIH, Dept Hlth & Human Serv, Bethesda, MD 20892 USA
[14] Univ Connecticut Hlth Care, Gen Clin Res Ctr, Farmington, CT USA