Long-term clinical outcome of patients with saphenous vein graft lesions treated with drug-eluting stents; comparison with patients treated with bare metal stents - Voudris, V; Thomopoulou, S; Karyofillis, P; Kalianos, C; Manginas, A.; Pavlides, G; Spargias, C; Cokkinos, D.V. (CIRCULATION, 2008)