[1] McMaster Univ, Div Gastroenterol, Hamilton, ON, Canada
[2] McMaster Univ, Farncombe Family Digest Hlth Res Inst, Hamilton, ON, Canada
[3] Newcastle Univ, Fac Med Sci, Newcastle Upon Tyne, England
[4] Northwestern Univ, Div Gastroenterol, Chicago, IL 60611 USA
[5] Queen Mary Univ London, Barts & London Sch Med & Dent, London, England
[6] Vanderbilt Univ, Med Ctr, Div Gastroenterol, Nashville, TN USA
[7] Dubai Acad Hlth Corp, Rashid Hosp, Dept Gastroenterol, Dubai, U Arab Emirates
[8] Inst Esophageal & Reflux Surg, Englewood, CO USA
[9] Imperial Coll London, Dept Surg & Canc, St Marys Campus, London, England
[10] Univ Miami, Miller Sch Med, Div Digest Hlth & Liver Dis, Miami, FL USA
[11] Univ La Sabana, Chia, Cundinamarca, Colombia
[12] Washington Univ, Sch Med, Div Gastroenterol, St Louis, MO USA
[13] Univ Sydney, Concord Hosp, Gastroenterol Dept, Sydney, NSW, Australia
[14] Univ Alberta, Fac Med & Dent, Dept Med, Div Gastroenterol, Edmonton, AB, Canada
[15] Hosp Univ Sains Malaysia, GI Funct & Motil Unit, Kota Baharu, Malaysia
[16] IRCCS Ist Clin Humanitas, Dept Human Pathol, Milan, Italy
[17] Ctr Hosp Univ Lyon, Dept Biostatist, Lyon, France
[18] RnCeus Interact, 2583 Kingsfield St, Mt Pleasant, SC 29466 USA
[19] Azienda Osped Univ Padova, Gastroenterol Unit, Padua, Italy
[20] INSINC Consulting Inc, Guelph, ON, Canada
[21] Jichi Med Univ, Dept Med, Div Gastroenterol, Tochigi, Japan
[22] Univ Calif San Diego, Div Gastroenterol & Hepatol, La Jolla, CA USA
[23] Univ Bordeaux, Hop Haut Leveque, Ctr Med Chirurg Magellan, CHU Bordeaux,Dept Gastroenterol,INSERM,CIC 1401, Bordeaux, France
[24] Univ Kansas, Sch Med, Div Gastroenterol & Hepatol, Kansas City, MO USA
[25] Kansas City VA Med Ctr, Kansas City, MO USA