1. Division of Cardiology, Department of Medicine; Johns Hopkins Medical Institutions; Baltimore MD
2. Hôpital Cardiovasculaire Louis Pradel, Centre d’Investigation Clinique; Hospices Civils de Lyon; Bron France
3. Office of Science and Engineering Laboratories, Center for Devices and Radiological Health; U.S. Food and Drug Administration; Silver Spring MD
4. Beth Israel Deaconess Medical Center; Harvard Medical School; Boston MA
5. Division of Cardiology, Department of Medicine; Hospital of the University of Pennsylvania; Philadelphia PA