Bie, C.I. de

disease patient treatment bowel bowel disease study crohn children inflamm bowel dis adolescent diagnosis response adult infliximab coliti gastroenterol growth therapy ibd patients self-efficacy transition disease location cd patients remission pediatr transition clinic chapter ifx treatment gastroenterology gastroenterologist registry terminal ileum maintenance difference effect location classification reference clinic score questionnaire outcome inflamm cohort enteral nutrition height month center anti-tnf infusion nutrition netherland induction eurokid follow-up result phenotype ileum involvement factor terminal group hospital j gastroenterol criteria ileal eurokids registry workup tract course uc patients porto criteria porto growth references j crohns colitis granuloma european paris classification treatment outcome number