P086 - Which activity index for ulcerative colitis (UC)? Evaluation of inter-observer variation in clinical, endoscopic and composite indices von Walsh, A.J., Brain, A.O.S., Keshav, S., Buchel, O., Jacobovitz, S., Merrin, B., Rolinski, M., Thomas, S., White, L., Von Herbray, A., Warren, B.F., Altman, D., Travis, S.

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