title: The changing role for cardiologists: challenges and opportunities in the 21st century.
authors.forename: M F
authors.initials: MF
authors.lastname: Lyons
authors.forename: J R
authors.initials: JR
authors.lastname: Butterly
mesh_terms: D002309:Cardiology / Q000639:trends*; D006801:Humans; D008329:Managed Care Programs; D010819:Physician's Role; D013673:Technology Assessment, Biomedical