[1] Tel HaShomer Sheba Med Ctr, Dept Gastroenterol, Ramat Gan, Israel
[2] Sun Yat Sen Univ, Affiliated Hosp 1, Gastroenterol, Guangzhou, Peoples R China
[3] Ben Gurion Univ Negev, Clin Res Ctr, Fac Hlth Sci, Soroka Univ Med Ctr 3, Beer Sheva, Israel
[4] Kitasato Univ, Kitasato Inst Hosp, Ctr Adv IBD Res & Treatment, Tokyo, Japan
[5] Technion Israel Inst Technol, Bruce & Ruth Rappaport Fac Med, Rambam Hlth Care Campus, Haifa, Israel
[6] Nancy Univ Hosp, INSERM, U594, Gastroenterol, Nancy, France
[7] Mt Sinai Hosp, Icahn Sch Med, Helmsley Inflammatory Bowel Dis Ctr, New York, NY 10029 USA
[8] Univ Calgary, Dept Med & Community Hlth Sci, Calgary, AB, Canada