1. P321 Cessation of Anti-Tumour Necrosis Factor Therapy in Patients with Perianal Fistulizing Crohn's Disease: Individual Patient Data Meta-Analysis of 323 patients from 12 studies. (27th May 2021) Authors: Ten Bokkel Huinink, S; van der Woude, J; Casanova, M J; Bouguen, G; Mak, J W Y; Molnar, T; Seidelin, J; Aurelien, A; D'Haens, G; Riviere, P; Guidi, L; Renata, B; Lin, W C; de Vries, A Journal: Journal of Crohn's and colitis Issue: Volume 15(2021)Supplement 1 Page Start: S347 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗