1. P556 Surgery in high-risk paediatric Crohn's Disease treated with up-front anti-TNF agents and long-standing biologic therapy. (30th January 2023) Authors: Musto, F; Distante, M; Dei Rossi, E; Calicchia, A; Veraldi, S; Mondi', F; Tarani, F; D'Arcangelo, G; Aloi, M Journal: Journal of Crohn's and colitis Issue: Volume 17(2023)Supplement 1 Page Start: i686 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗