1. Hennepin County Medical Center, Minneapolis, MN
2. Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN
3. Department of General and Interventional Cardiology, The University Heart Center at the University Medical Center Hamburg-Eppendorf, Hamburg, Germany
4. TIMI Study Group, and
5. Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA