“…The EPACT II appropriateness criteria were established for nine broad clinical situations in CD (Table 1): active luminal CD, steroid-dependent or -refractory disease, fistulizing CD, fibro-stenotic CD, upper gastrointestinal CD or extraintestinal manifestations of CD, maintenance of a medically induced or surgically induced remission of CD. 12 Definitions were developed to classify typical patients to be included in each of these clinical situations. The cohort study questionnaires were developed to facilitate inclusion of cases in corresponding clinical situations, by collecting data on variables linked to V V. .…”