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[No authors listed] Comparison of the effects of two doses of recombinant hirudin compared with heparin in patients with acute myocardial ischemia without ST elevation: a pilot study. Organization to Assess Strategies for Ischemic Syndromes (OASIS) Investigators. Circulation. 1997 Aug 5, 96(3), 769-777. [PMID]: 9264481.