Recombinant hirudin (lepirudin) provides safe and effective anticoagulation in patients with heparin-induced thrombocytopenia: A prospective study - Greinacher, A; Volpel, H; Janssens, U; Hach-Wunderle, V; Kemkes-Matthes, B; Eichler, P; Mueller-Velten, HG; Potzsch, B (Circulation, 1999)