Safety and efficacy of recombinant hirudin (CGP 39 393) versus heparin in patients with stable angina undergoing coronary angiplasty - van den, Boss AA; Deckers, J W; Heyndrickx, G R; Laarman, G J; Suryapranata, H; Zijlstra, F; Close, P; Rojnierse, J J; Buller, H R; Serruys, P W (Circulation, 1993)