Navaneethan, Udayakumar Severe disease on endoscopy and steroid use increase the risk for bowel perforation during colonoscopy in inflammatory bowel disease patients. [electronic resource] - Journal of Crohn's & colitis May 2012 - 470-5 p. digital Publication Type: Journal Article ISSN: 1876-4479 Standard No.: 10.1016/j.crohns.2011.10.005 doi Subjects--Topical Terms: AdultCase-Control StudiesColonoscopy--adverse effectsFemaleHumansInflammatory Bowel Diseases--classificationIntestinal Perforation--etiologyMaleMiddle AgedMultivariate AnalysisPrevalenceRiskRisk FactorsSteroids--adverse effects