Thromboembolic events after carotid endarterectomy are not prevented by aspirin, but are due to the platelet response to adenosine 5′-diphosphate. - Hayes, P. D.; Box, H.; Tull, S.; Gaunt, M. E.; Bell, P. R. F.; Goodall, A. H.; Naylor, A. R. (British Journal of Surgery, 2000)