Obesity is Associated With Increased Risk of Crohn's disease, but not Ulcerative Colitis: A Pooled Analysis of Five Prospective Cohort Studies - Chan, SSM; Chen, Y; Casey, K; Olen, O; Ludvigsson, JF; Carbonnel, F; Oldenburg, B; Gunter, MJ; Tjonneland, A; Grip, O; Lochhead, P; Chan, AT; et al. (Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 2022)