E. Replacement of unfractionated heparin by low-molecular-weight heparin for postorthopedic surgery antithrombotic prophylaxis lowers the overall risk of symptomatic thrombosis because of a lower frequency of heparin-induced thrombocytopenia - Greinacher, A; Eichler, P; Lietz, T; Warkentin, T (Blood, 2005)