title: [Changes of direction in gastroenterology].
authors.affiliation: Medizinische Klinik C, Klinikum Ludwigshafen.
authors.forename: J F
authors.initials: JF
authors.lastname: Riemann
mesh_terms: D000818:Animals; D005762:Gastroenterology / Q000266:history* / Q000639:trends; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D010506:Periodicals as Topic / Q000266:history