Effects of Thrombin Inhibition of the Development of Acute Platelet-Thrombus Deposition During Angioplasty in Pigs: Heparin Versus Recombinant Hirudin, a Specific Thrombin Inhibitor - Heras, M; Chesebro, J H; Penny, W J; Bailey, K R; Badimon, L; Fuster, V (Circulation, 1989)