1. Minneapolis Heart Institute, MN (P.M.E., B.S.).
2. Department of Medicine, Duke University Medical Center, Durham, NC (J.N.K.).
3. Department of Advanced Cardiac Care, INTEGRIS Baptist Medical Center, Oklahoma City, OK (A.E.B.).
4. Thrombosis in Myocardial Infarction Study Group, Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA (E.A.B.).
5. Department of Critical Care Medicine and Division of Cardiology, Department of Medicine, University of Alberta, Edmonton, Canada (S.V.D.).