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Pittet, V; Juillerat, P; Mottet, C; Felley, C; Ballabeni, P; Burnand, B; Michetti, P; Vader, JP; and, the Swiss IBD Cohort Study Group (2009). Cohort profile: the Swiss Inflammatory Bowel Disease Cohort Study (SIBDCS). International journal of epidemiology, 38(4), pp. 922-31. Oxford: Oxford University Press 10.1093/ije/dyn180
