[1] Hosp Sick Children, Div Gastroenterol Hepatol & Nutr, Toronto, ON, Canada
[2] Univ Toronto, Toronto, ON, Canada
[3] Univ Alberta, Dept Pediat, Div Pediat Gastroenterol, Edmonton, AB, Canada
[4] Univ Milan, Osped Maggiore Policlin Milano, Fdn IRCCS Ca Granda, Dept Pathophysiol & Transplantat,Pediatr Gastroent, Milan, Italy
[5] Ghent Univ Hosp, Pediat Gastroenterol, Ghent, Belgium
[6] Univ Hosp Motol, Dept Paediat, Prague, Czech Republic
[7] Hosp St Joan Deu, Dept Pediat Gastroenterol Hepatol & Nutr, Barcelona, Spain
[8] Univ East Anglia UEA, Dept Paediat Gastroenterol, Norfolk & Norwich Univ Hosp, Jenny Lind Childrens Hosp,Fac Med & Hlth Sci, Norwich, England
[9] Univ Milan, Vittore Buzzi Childrens Hosp, Dept Paediat, Milan, Italy
[10] Oxford Univ Hosp NHS Trust, John Radcliffe Hosp, Translat Gastroenterol Unit, Oxford, England
[11] Univ Zagreb, Childrens Hosp Zagreb, Referral Ctr Pediat Gastroenterol & Nutr, Dept Pediat,Med Sch, Zagreb, Croatia
[12] Univ Coll Dublin, DOCHAS Grp, Childrens Hlth Ireland, Dublin, Ireland
[13] Amsterdam UMC, Emma Childrens Hosp, Div Paediat Gastroenterol & Nutr, Amsterdam, Netherlands
[14] Univ Naples Federico II, Dept Translat Med Sci, Sect Paediat, Naples, Italy
[15] Karolinska Inst, Dept Med Solna, Div Clin Epidemiol, Stockholm, Sweden
[16] Univ Autonoma Barcelona UAB, Vall Hebron Univ Hosp, Colorectal Surg, Barcelona, Spain
[17] Univ Campania Luigi Vanvitelli, Dept Adv Med & Surg Sci, Naples, Italy
[18] Univ Groningen, Univ Med Ctr Groningen, Dept Paediat Gastroenterol Hepatol & Nutr, Groningen, Netherlands
[19] Erasmus MC Sophia Childrens Hosp, Dept Paediat Gastroenterol, Rotterdam, Netherlands
[20] Royal Hosp Children & Young People, Dept Paediat Gastroenterol, Edinburgh, Scotland
[21] Schneider Childrens Med Ctr Israel, Inst Gastroenterol Nutr & Liver Dis, Petah Tiqwa, Israel
[22] Tel Aviv Univ, Fac Med, Tel Aviv, Israel
[23] Ctr Hosp Univ Sao Joao, Pediat Gastroenterol & Nutr Unit, Porto, Portugal
[24] Hebrew Univ Jerusalem, Juliet Keidan Inst Paediat Gastroenterol & Nutr, Shaare Zedek Med Ctr, Eisenberg R&D Author, Jerusalem, Israel
[25] Univ Edinburgh, Ctr Inflammat Res, Child Life & Hlth, Edinburgh, Scotland
[26] Dana Dwek Childrens Hosp, Tel Aviv Sourasky Med Ctr, Pediat Gastroenterol Inst, Tel Aviv, Israel
[27] Tel Aviv Univ, Fac Med & Hlth Sci, Tel Aviv, Israel