Ridder, L. de

patient disease bowel study crohn fliximab treatment endoscopic children response healing complication activity therapy bowel disease score flammatory bowel disease gastroenterol adolescent marker mucosal healing procedure level self-efficacy imaging coliti mucosal diagnosis result transition endoscopy observer transition clinic fliximab therapy small-bowel percutaneous endoscopic gastrostomy month technique gastroenterology surgery terminal ileum infusion outcome adult table ifx treatment assessment number clinic netherland antibody questionnaire disease activity paediatric value factor evaluation flammatory resonance range resonance imaging ileum enteroscopy adolescent ibd patients maintenance gastroenterologist hospital gastrostomy complication rate medication parent agreement trial pediatr follow-up adult gastroenterologist terminal fliximab infusions cohort 0/0/0