title: Cardiac surgery. Prologue: from whence?
mesh_terms: D006348:Cardiac Surgical Procedures / Q000266:history*; D005060:Europe; D006331:Heart Diseases / Q000601:surgery; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D014481:United States