Aprotinin for coronary bypass operations: efficacy, safety, and influence on early saphenous vein graft patency - Lemmer, J H; Stanford, W; Bonney, S L; Breen, J F; Chomka, E V; Eldredge, W J; Holt, W W; Karp, R B; Laub, G W; Lipton, M J; Schaff, H V; Tatooles, C J; Rumberger, J A (A multicenter randomized, double-blind, placebo-controlled study, 1994)