Use of a direct antithrombin, Hirulog, in place of heparin during coronary angioplasty - Topol, E J; Bonan, R; Jewitt, D; Sigwart, U; Kakkar, V V; Rothman, M; deBono, D; Ferguson, J; Willerson, J T; Strony, J; Ganz, P; Cohen, M D; Raymond, R; Fox, I; Maraganore, J; Adelman, B (Circulation, 1993)