title: Appendectomy and protection against ulcerative colitis.
authors.forename: A B
authors.initials: AB
authors.lastname: Lowenfels
authors.forename: P
authors.initials: P
authors.lastname: Maisonneuve
mesh_terms: D001062:Appendectomy; D001064:Appendicitis / Q000453:epidemiology / Q000503:physiopathology*; D001065:Appendix / Q000473:pathology*; D003093:Colitis, Ulcerative / Q000453:epidemiology / Q000503:physiopathology / Q000517:prevention & control*; D005355:Fibrosis; D006801:Humans