[1] Univ Utah Hlth, Gastroenterol & Hepatol, Salt Lake City, UT USA
[2] Baylor Scott & White Hlth, Dept Med, Round Rock, TX USA
[3] Marmara Univ, Sch Med, Dept Gastroenterol, Istanbul, Turkiye
[4] Univ Coll London Hosp UCLH, Pancreaticobiliary Med Unit, London, England
[5] Univ Cincinnati Lib, Donald C Harrison Hlth Sci Lib, Cincinnati, OH USA
[6] CHI Hlth Creighton Univ, Div Gastroenterol & Hepatol, Med Ctr, Omaha, NE USA
[7] Univ Nebraska Med Ctr, Gastroenterol & Hepatol, Omaha, NE USA
[8] Univ Foggia, Dept Med Sci, Sect Gastroenterol, I-71122 Foggia, Italy
[9] Univ Libre Bruxelles ULB, CUB Erasme Hosp, Dept Gastroenterol Hepatopancreatol & Digest Oncol, Brussels, Belgium
[10] Univ Cincinnati, Div Digest Dis, Cincinnati, OH USA
[11] Stanford Univ, Div Gastroenterol, Stanford, CA USA
[12] Porter Adventist Hosp PEAK Gastroenterol, Ctr Adv Therapeut Endoscopy CATE, Denver, CO USA
[13] Centura Hlth, Porter Adventist Hosp, Ctr Adv Therapeut Endoscopy CATE, Denver, CO 80112 USA