Left main coronary artery stenosis; results of coronary bypass surgery.
D000790:Angiocardiography; D006328:Cardiac Catheterization; D017023:Coronary Angiography; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000601:surgery*; D004562:Electrocardiography; D005080:Exercise Test; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012501:Saphenous Vein / Q000637:transplantation*