coronary angiography: coronary artery bypass graft origin first saphenous vein graft obstruct single discrete, concentric
coronary angiography: coronary artery bypass graft origin first saphenous vein graft obstruct single discrete, concentric
coronary angiography coronary artery bypass graft origin SVG-1 obstruct single discrete, concentric
coronary angiography coronary artery bypass graft origin svg-1 obstruct single discrete, concentric