[1] Hosp Sick Children & Child Hlth Evaluat Sci, SickKids Res Inst, SickKids Inflammatory Bowel Dis Ctr, Div Gastroenterol Hepatol & Nutr, Toronto, ON, Canada
[2] Univ Toronto, Dept Paediat, Toronto, ON, Canada
[3] Univ Toronto, Inst Hlth Policy Management & Evaluat, Toronto, ON, Canada
[4] Childrens Hosp Eastern Ontario CHEO, CHEO Inflammatory Bowel Dis Ctr, Div Gastroenterol Hepatol & Nutr, Ottawa, ON, Canada
[5] CHEO Res Inst, Hlth Informat Technol Program, Ottawa, ON, Canada
[6] Univ Ottawa, Dept Pediat, Ottawa, ON, Canada
[7] Univ Ottawa, Sch Epidemiol & Publ Hlth, Ottawa, ON, Canada
[8] McGill Univ, Inflammatory Bowel Dis Ctr, Dept Med, Div Gastroenterol,Hlth Ctr, Montreal, PQ, Canada
[9] Univ Sherbrooke, Ctr Hosp Univ Sherbrooke, Dept Med, Div Gastroenterol,Hotel Dieu, Sherbrooke, PQ, Canada
[10] Univ Sherbrooke, Ctr Rech Etienne Lebel, Sherbrooke, PQ, Canada
[11] Ottawa Hosp Res Inst, Clin Epidemiol Program, Ottawa, ON, Canada
[12] McGill Univ, Montreal Childrens Hosp, Dept Pediat, Pediat Gastroenterol Serv,Hlth Ctr, Montreal, PQ, Canada