1. TIMI Study Group, Cardiovascular Division, Brigham and Women's Hospital, Boston, MA
2. Cardiovascular Division, Brigham and Women's Hospital, Boston, MA
3. Center for Outcomes Research and Evaluation, Yale–New Haven Hospital, New Haven, CT
4. Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT
5. Division of Cardiovascular Medicine, Duke University Medical Center, Duke Clinical Research Institute, Durham, NC
6. Cardiolovascular Division, Beth Israel Deaconess Medical Center, Boston, MA