Lepirudin (recombinant hirudin) for parenteral anticoagulation in patients with heparin-induced thrombocytopenia. Heparin-associated Thrombocytopenia Study (HAT) investigators. - Greinacher,A.; Janssens,U.; Berg,G.; Bock,M.; Kwasny,H.; Kemkes-Matthes,B, et al. (Circulation, 1999)