[1] UCLA, David Geffen Sch Med, Vatche & Tamar Manoukian Div Digest Dis, Los Angeles, CA USA
[2] Michigan Med, Div Gastroenterol & Hepatol, Ann Arbor, MI USA
[3] SUNY Upstate Med Univ, Dept Pediat, Div Gastroenterol Hepatol & Nutr, Syracuse, NY USA
[4] Cedars Sinai Med Ctr, Dept Med, Karsh Div Gastroenterol & Hepatol, Los Angeles, CA USA
[5] Mayo Clin, Dept Internal Med, Div Gastroenterol & Hepatol, Rochester, MN USA
[6] Minneapolis VA Healthcare Syst, Minneapolis, MN USA
[7] Univ Minnesota, Sch Med, Minneapolis, MN USA
[8] Cleveland VA Healthcare Syst, Cleveland, OH USA
[9] Case Western Reserve Univ, Cleveland, OH USA
[10] Univ Minnesota, Dept Med, Minneapolis, MN USA
[11] Mayo Clin, Div Gastroenterol & Hepatol, Phoenix, AZ USA
[12] Univ Washington, Div Gastroenterol & Hepatol, Washington, DC USA
[13] Mayo Clin, Rochester, MN USA
[14] Duke Univ, Sch Med, Div Gastroenterol, Durham, NC USA
[15] Durham Vet Affairs Med Ctr, Durham, NC USA
[16] DartMouth Hlth, Dept Med, Div Gastroenterol & Hepatol, Lebanon, NH USA
[17] Cleveland Clin, Digest Dis & Surg Inst, Dept Gastroenterol Hepatol & Nutr, Cleveland, OH USA
[18] Univ Minnesota, Minneapolis, MN USA
[19] UCLA, David Geffen Sch Med, Vatche & Tamar Manoukian Div Digest Dis, 10833 Le Conte Ave,CHS 42 210, Los Angeles, CA 90095 USA