1. Cardiovascular disease department, College of MedicineUniversity of Arizona Phoenix Arizona
2. Hoffman Heart and Vascular Institute, St. Francis Hospital and Medical CenterUniversity of Connecticut School of Medicine Hartford Connecticut
3. Medstar Georgetown University Hospital Washington, DC
4. University of South Florida Tampa Florida
5. Nova Southeastern University Fort Lauderdale Florida
6. Cardiovascular disease departmentUniversity Hospitals Cleveland Ohio
7. Department of CardiologyMayo Clinic Rochester Minnesota