1. Appendectomy is followed by increased risk of Crohn's disease
Roland E. Andersson, Gunnar Olaison, Curt Tysk, Anders Ekbom 
Gastroenterology 
Volume 124, Issue 1, Pages (January 2003)
DOI: /gast
Copyright © 2003 American Gastroenterological Association Terms and Conditions

2. Fig. 1
Kaplan-Meier plot of the cumulated risk of Crohn's disease according to diagnosis at appendectomy and among the controls adjusted for differences in age at operation.
Gastroenterology  , 40-46DOI: ( /gast )
Copyright © 2003 American Gastroenterological Association Terms and Conditions

3. Fig. 2
Kaplan-Meier plot of the cumulated risk of Crohn's disease among case patients that were subjected to appendectomy before the age of 10 years and the controls.
Gastroenterology  , 40-46DOI: ( /gast )
Copyright © 2003 American Gastroenterological Association Terms and Conditions