title: Historical origins of current IBD concepts.
authors.affiliation: The Louis Block Distinguished Service Professor of Medicine, Department of Medicine, University of Chicago, USA.
authors.forename: J B
authors.initials: JB
authors.lastname: Kirsner
mesh_terms: D003093:Colitis, Ulcerative / Q000453:epidemiology / Q000209:etiology / Q000266:history*; D003424:Crohn Disease / Q000453:epidemiology / Q000209:etiology / Q000266:history*; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans