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Copyright ©2014 Baishideng Publishing Group Co.
World J Gastroenterol. Feb 7, 2014; 20(5): 1238-1247
Published online Feb 7, 2014. doi: 10.3748/wjg.v20.i5.1238
Figure 1
Figure 1 Included and excluded articles. IBD: Inflammatory bowel diseases.
Figure 2
Figure 2 Summary of standardized incidence ratio for Crohn’s disease and ulcerative colitis in second-generation immigrants (adapted from ref. [43]).