Use of hirulog in the prevention of venous thrombosis after major hip or knee surgery - Ginsberg, J S; Nurmohamed, M T; Gent, M; MacKinnon, B; Sicurella, J; Brill-Edwards, P; Levine, M N; Panju, A A; Powers, P; Stevens, P; Turpie, A GG; Weitz, J; Büller, H R; ten Cate, J W; Neemeh, J; Adelman, B; Fox, I; Maraganore, J; Hirsh, J (Circulation, 1994)