1. P633 Choice of first biologic in moderate to severe ulcerative colitis – a decision analysis using time-on-treatment and UK costs. (30th January 2023) Authors: Dhar, A; Wilson, A; Reid, V; Clark, T; Tibbatts, C; Dallongeville, A; Robertson, J; Eaton, J; Cranmer, H; Owen, G Journal: Journal of Crohn's and colitis Issue: Volume 17(2023)Supplement 1 Page Start: i765 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗