A platelet inhibitory drug trial in coronary artery bypass operations: benefit of preoperative dipyridamole and aspirin therapy on early postoperative vein graft patency - Chesebro, J H; Clements, I P; Fuster, V; Elveback, L R; Smith, H C; Bardsley, W T; Frye, R L; Holmes, D R; Vliestra, R E; Pluth, J R; Wallace, R B; Puga, F J; Orszulak, T A; Piehler, J M; Schaff, H V; Danielson, G K (N engl J Med, 1982)