Gut · 2007 · 88 citations · 28 references
The transient increased risk of Crohn's disease after an appendectomy is probably explained by diagnostic bias.
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Appendectomy and Protection against Ulcerative Colitis
Roland E. Andersson, Gunnar Olaison, Curt Tysk et al. · New England Journal of Medicine · 2001 · 487 citations · Full text
Inflammatory bowel disease and domestic hygiene in infancy
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