[1] Univ Utah, Pediat Gastroenterol, Salt Lake City, UT USA
[2] Univ Manitoba, Winnipeg, MB, Canada
[3] NW Pediat Gastroenterol LLC, Portland, OR USA
[4] Texas Childrens Hosp, Houston, TX 77030 USA
[5] Univ Liverpool, Liverpool, Merseyside, England
[6] Shaare Zedek Med Ctr, Jerusalem, Israel
[7] SUNY Buffalo, Buffalo, NY USA
[8] Med Coll Wisconsin, Milwaukee, WI 53226 USA
[9] Univ Med Ctr Ljubljana, Ljubljana, Slovenia
[10] Univ Athens, Athens, Greece
[11] Thomas Jefferson Univ, Sidney Kimmel Med Coll, Wilmington, DE USA
[12] Univ Ulsan, Coll Med, Seoul, South Korea
[13] Childrens Mem Hlth Ctr, Warsaw, Poland
[14] Univ Lille, Lille, France
[15] Univ Coll Dublin, Dublin, Ireland
[16] Yale Univ, Sch Med, New Haven, CT USA
[17] Columbia Univ Coll Phys & Surg, 630 W 168th St, New York, NY 10032 USA
[18] Univ Toronto, Toronto, ON, Canada
[19] UPMC, Childrens Hosp Pittsburgh, Pittsburgh, PA USA
[20] Emory Univ, Sch Med, Atlanta, GA USA
[21] Univ Naples Federico II, Naples, Italy
[22] Mayo Clin, Rochester, MN USA
[23] Univ Helsinki, Helsinki, Finland
[24] Phoenix Childrens Hosp, Phoenix, AZ USA
[25] Prince Salman North West Armed Forces Hosp, Tabuk, Saudi Arabia
[26] Alder Hey Childrens NHS Fdn Trust, Manchester, Lancs, England