Endoscopic Saphenous Vein Harvesting for CABG - a Randomized, Prospective Trial - Schurr, U P; Lachat, M L; Reuthebuch, O; Kadner, A; Mäder, M; Seiffert, B; Hoerstrup, S P; Zünd, G; Genoni, M; Turina, M I (The Thoracic and Cardiovascular Surgeon, 2002)