title: Unstable angina--prospective and randomized study of its evolution, with and without surgery.
mesh_terms: D000787:Angina Pectoris / Q000145:classification / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000601:surgery*; D000790:Angiocardiography; D002932:Cineangiography; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D009203:Myocardial Infarction / Q000000981:diagnostic imaging