1. P816 IBSEN III—a new population-based inception cohort from South-Eastern Norway. (16th January 2018) Authors: Kristensen, V A; Opheim, R; Ricanek, P; Huppertz-Hauss, G; Perminow, G; Detlie, T E; Skram, K; Vatn, S; Olbjørn, C; Rove, J; Stray-Pedersen, R; Ahmad, T R; Pedersen, A; Skogestad, E; Holm, H K; Ystrøm, C M; Aballi, B; Torp, R; Hovde, O; Frigstad, S O Journal: Journal of Crohn's and colitis Issue: Volume 12:Number 1(2018:Jan.)Supplement 1 Page Start: S526 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗