1. Division of Cardiology, Interventional Section; Beth Israel Deaconess Medical Center and Harvard Medical School; Boston Massachusetts
2. Clinical Trials Center; Cardiovascular Research Foundation; New York New York
3. New York-Presbyterian Hospital/Columbia University Medical Center; New York New York
4. Division of Cardiology; Washington University; St. Louis Missouri
5. The Medicines Company; Parsippany New Jersey
6. Green Lane Cardiovascular Service; Auckland City Hospital and University of Auckland; Auckland New Zealand
7. Department of Medicine; Stanford University Medical Center; Stanford California
8. Division of Cardiology; Brigham and Women's Hospital Heart and Vascular Center and Harvard Medical School; Boston Massachusetts