title: The continuing conundrum of syndrome X: further evidence of heterogeneity.
authors.forename: M A
authors.initials: MA
authors.lastname: Alpert
mesh_terms: D003326:Coronary Circulation / Q000502:physiology; D003331:Coronary Vessels / Q000000981:diagnostic imaging / Q000473:pathology; D004562:Electrocardiography; D006801:Humans; D017566:Microvascular Angina / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology / Q000628:therapy; D009206:Myocardium / Q000378:metabolism; D014463:Ultrasonography; D018487:Ventricular Dysfunction, Left / Q000503:physiopathology