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Kaplan-Meier plots illustrating cumulative surgical recurrence rates in patients with Crohn’s disease who received post-operative anti-TNF maintenance therapy grouped by presence or not of large intestinal involvement. There was a non-significant tendency toward higher rates of surgical recurrence in patients without large intestinal involvement (Montreal L1) (odds ratio, 2.38; 95% CI, 0.94-6.05; P=0.068).
