TIMI Study Group, Brigham and Women's Hospital, Boston, Massachusetts. Division of Cardiology, Cantonal Hospital, Geneva University Hospitals, Geneva, Switzerland. Cambridge Cognition, Cambridge, United Kingdom. Amgen, Thousand Oaks, California. NHMRC Clinical Trials Centre, Sydney Medical School, the University of Sydney, Australia. Center for Preventive Medicine, Oslo University Hospital, UllevÄl; and Medical Faculty, University of Oslo, Norway. International Centre for Circulatory Health, Imperial College London, London, United Kingdom. Department of Neurology, the Warren Alpert Medical School of Brown University, Providence, Rhode Island.