title: Johannes Volkmann, M.D. Pioneer in intravenous urography.
mesh_terms: D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007454:Iodides; D007669:Kidney Calculi / Q000000981:diagnostic imaging; D014567:Urography / Q000266:history*; D014572:Urology / Q000266:history
chemical_list: D007454:Iodides