A frameshift mutation in *NOD2* associated with susceptibility to CD
Association between insertion mutation in NOD2 gene and Crohn’s disease in German and British populations
Disease Concordance, Zygosity, and NOD2/CARD15 Status. Follow-Up of a Population-Based Cohort of Danish Twins with Inflammatory Bowel Disease
Association analysis of genetic variants in IL23R, ATG16L1 and 5p13.1 loci with Crohn’s disease in Japanese patients