Iranian Registry of Crohn’s and Colitis: study profile of first nation-wide inflammatory bowel disease registry in Middle East

Background/Aims A recent study revealed increasing incidence and prevalence of inflammatory bowel disease (IBD) in Iran. The Iranian Registry of Crohn’s and Colitis (IRCC) was designed recently to answer the needs. We reported the design, methods of data collection, and aims of IRCC in this paper.