[1] Wayne State Univ, Dept Internal Med, Trinity Hlth Oakland, Pontiac, MI 48341 USA
[2] Univ Kansas, Sch Med, Div Gastroenterol Hepatol & Motil, Kansas City, KS 66160 USA
[3] Maharani Laxmi Bai Med Coll, Dept Internal Med, Jhansi 284001, Uttar Pradesh, India
[4] Dow Univ Hlth Sci, Dept Internal Med, Karachi 74200, Pakistan
[5] Univ Arkansas Med Sci, Dept Gastroenterol & Hepatol, Little Rock, AR 72205 USA
[6] East Carolina Univ, Brody Sch Med, Div Gastroenterol Hepatol & Nutr, Greenville, NC 27834 USA
[7] Geisinger Wyoming Valley Med Ctr, Dept Internal Med, Wilkes Barre, PA 18711 USA
[8] Univ Missouri Kansas City, Dept Internal Med, Kansas City, MO 64110 USA
[9] Sinai Hosp, Dept Internal Med, Baltimore, MD 21215 USA
[10] Rochester Gen Hosp, Dept Internal Med, Rochester, NY 14621 USA
[11] Univ New Mexico, Dept Surg, Albuquerque, NM 87131 USA
[12] Advent Hlth, Ctr Intervent Endoscopy CIE, Orlando, FL 32803 USA