title: Use of echocardiography by internists and cardiologists.
authors.forename: T O
authors.initials: TO
authors.lastname: Cheng
mesh_terms: D002309:Cardiology / Q000706:statistics & numerical data*; D004452:Echocardiography / Q000706:statistics & numerical data*; D006801:Humans; D007388:Internal Medicine / Q000706:statistics & numerical data*; D008945:Mitral Valve Prolapse / Q000000981:diagnostic imaging