title: Clausius Henry Mastin--internist-genitourinary surgeon.
mesh_terms: D001634:Bibliographies as Topic; D013502:General Surgery / Q000266:history*; D049672:History, 19th Century; D006801:Humans; D007388:Internal Medicine / Q000266:history; D014481:United States; D014570:Urologic Diseases / Q000266:history