[1] Univ Southern Calif, Keck Sch Med, Div Gastrointestinal & Liver Dis, Los Angeles, CA 90007 USA
[2] Med Univ South Carolina, Dept Gastroenterol & Hepatol, Charleston, SC 29425 USA
[3] Northwestern Med, Dept Vasc & Intervent Radiol, Chicago, IL USA
[4] Indiana Univ Sch Med, Dept Surg, Indianapolis, IN 46202 USA
[5] Indiana Univ Sch Med, Div Gastroenterol & Hepatol, Indianapolis, IN 46202 USA
[6] Univ Minnesota, Med Ctr, Div Gastroenterol Hepatol & Nutr, Minneapolis, MN 55455 USA
[7] Dartmouth Hitchcock Med Ctr, Geisel Sch Med, Dept Gastroenterol & Hepatol, Lebanon, NH 03766 USA
[8] Texas Childrens Hosp, Baylor Coll Med, Sect Pediat Gastroenterol Hepatol & Nutr, Houston, TX 77030 USA
[9] Queens Med Ctr, Dept Gastroenterol, Honolulu, HI USA
[10] Beaumont Hlth, Sect Gastroenterol & Hepatol, Royal Oak, MI USA
[11] Oakland Univ, William Beaumont Sch Med, Rochester, MI 48063 USA
[12] Permanente Med Grp Inc, Dept Gastroenterol, San Francisco, CA USA
[13] Univ Michigan, Michigan Med, Dept Gastroenterol, Ann Arbor, MI 48109 USA
[14] Virginia Mason Med Ctr, Inst Digest Dis, Dept Gastroenterol & Hepatol, Seattle, WA 98101 USA
[15] Kaiser Permanente San Francisco Med Ctr, Dept Gastroenterol, San Francisco, CA USA
[16] Advent Hlth Hosp Altamonte Springs, Dept Gastroenterol Hepatol, Advent Hlth Med Grp, Altamonte Springs, FL USA
[17] Wake Forest Sch Med, Dept Gastroenterol, Winston Salem, NC 27101 USA
[18] Harvard Med Sch, Beth Israel Deaconess Med Ctr, Div Gastroenterol, Boston, MA 02115 USA
[19] Mayo Clin, Dept Gastroenterol & Hepatol, Rochester, MN USA
[20] UTHealth, McGovern Med Sch, Div Gastroenterol Hepatol & Nutr, Houston, TX USA
[21] Univ Florida, Dept Gastroenterol, Gainesville, FL USA
[22] Univ Colorado, Div Gastroenterol & Hepatol, Anschutz Med Campus, Aurora, CO USA