title: How can doctors tell if a patient needs a bypass operation or an angioplasty?
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000379:methods; D054059:Coronary Occlusion / Q000175:diagnosis* / Q000628:therapy; D006801:Humans; D009204:Myocardial Revascularization; D015607:Stents