Review: thienopyridines are more effective than aspirin for preventing vascular events in high-risk patients...commentary on Hankey GJ, Sudlow CL, Dunbabin DW. Thienopyridine derivatives (ticlopidine, clopidogrel) versus aspirin for preventing stroke and other serious vascular events in high vascular risk patients. Cochrane Review, latest version 24 Aug 1999. In: The Cochrane Library. Oxford; Update Software