DACAB Trial: Follow-up Extension

This study will include the subjects who enrolled in DACAB trial (NCT02201771) to observe clinical outcomes 5 years after coronary artery bypass grafting（CABG）. The primary objective is to compare the occurrence of MACE-4 ( a composite of all-cause death, myocardial infarction, stroke, and coronary revascularization) among 3 randomized regimens (T+A, T alone, A alone) in previous DACAB trial within 5 years after CABG. The secondary objectives are to compare the occurrence of MACE-5( a composite of all-cause death, myocardial infarction, stroke, coronary revascularization and hospitalization for unstable angina); MACE-3 ( a composite of cardiovascular death, myocardial infarction, and stroke); all-cause death; cardiovascular death; myocardial infarction; stroke; coronary revascularization; hospitalization for unstable angina and grafts patency rate among 3 randomized regimens in previous DACAB trial within 5 years after CABG. The exploratory objectives are to compare the occurrence of MACE-4; MACE-5; MACE-3; all-cause death; cardiovascular death; myocardial infarction; stroke; coronary revascularization and hospitalization for unstable angina between 2 cohorts with or without grafts/vein grafts failure at 1 year angiographic follow-up.