Coronary bypass surgery.
D000787:Angina Pectoris / Q000453:epidemiology; D002986:Clinical Trials as Topic; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000601:surgery; D003645:Death, Sudden / Q000453:epidemiology; D005069:Evaluation Studies as Topic; D005500:Follow-Up Studies; D006801:Humans; D011183:Postoperative Complications; D011897:Random Allocation; D012306:Risk; D013997:Time Factors