1. Duke Clinical Research Institute, Duke University Medical Center, Durham, North Carolina
2. Department of Emergency Medicine, Olive View–University of California, Los Angeles, Medical Center, Sylmar
3. Division of Cardiology, Department of Medicine, Harbor–University of California, Los Angeles, Medical Center, Torrance
4. Cardiovascular Division, TIMI Study Group, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
5. Minneapolis Heart Institute Foundation at Abbott Northwestern Hospital, Minneapolis, Minnesota
6. Division of Cardiovascular Diseases, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor