Is ileocaecal Crohn's disease L1 or L3 according to the Montreal classification?
Peyrin-Biroulet
Laurent
L
D003092:Colitis / Q000145:classification*; D003424:Crohn Disease / Q000145:classification*; D006801:Humans; D007079:Ileitis / Q000145:classification*; D015203:Reproducibility of Results