Reply

We welcome the interest by Fung et al1 in our systematic review and meta-analysis on the impact of race and ethnicity on phenotype and outcomes in patients with inflammatory bowel diseases (IBD) (Crohn's disease, ulcerative colitis) published in this journal.2 They raise a few different points. First, they suggest that the higher frequency of upper gastrointestinal tract involvement in Crohn's disease in Asian population may be due to greater use of upper gastrointestinal endoscopies in Asia compared with Western populations.

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