Effects of thrombin inhibition on 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)