What percentage of patients with angina pectoris are candidates for bypass grafts?
D000787:Angina Pectoris / Q000000981:diagnostic imaging / Q000601:surgery*; D000790:Angiocardiography; D000792:Angiography; D017023:Coronary Angiography; D003331:Coronary Vessels / Q000601:surgery*; D006801:Humans; D012501:Saphenous Vein / Q000637:transplantation; D014182:Transplantation, Autologous