1. P478 Effectiveness of ustekinumab dose escalation in Crohn's disease patients with insufficient response to standard-dose subcutaneous maintenance therapy: an observational multicentre study. (27th May 2021) Authors: Olmedo-Martín, R; Martín-Rodríguez, M D M; Lorenzo-González, L; Lázaro-Sáez, M; Lopez-Vico, M; Hernández-Martínez, Á; Argüelles-Arias, F; Vázquez-Morón, J M Journal: Journal of Crohn's and colitis Issue: Volume 15(2021)Supplement 1 Page Start: S467 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗