Aprotinin does not decrease early graft patency after coronary artery bypass grafting despite reducing postoperative bleeding and use of donated blood - Havel, M; Grabenwoger, F; Schneider, J; Laufer, G; Wollenek, G; Owen, A; Simon, P; Teufelsbauer, H; Wolner, E (J Thorac Cardiovasc Surg, 1994)