title: Listening for signals.
mesh_terms: D000369:Aged, 80 and over; D000787:Angina Pectoris / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D006328:Cardiac Catheterization; D023921:Coronary Stenosis / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005080:Exercise Test; D006801:Humans; D008297:Male; D009204:Myocardial Revascularization / Q000379:methods; D015607:Stents