1. Department of Internal Medicine University of Massachusetts Medical School‐ Baystate Medical Center Springfield Massachusetts
2. Division of Cardiology, Department of Internal Medicine Southern Illinois University School of Medicine Springfield Illinois
3. Department of Internal Medicine Southern Illinois University School of Medicine Springfield Illinois
4. Department of Internal Medicine, Center for Clinical Research Southern Illinois University School of Medicine Springfield Illinois
5. Cardiovascular Division Brigham and Women's Hospital Heart & Vascular Center, Harvard Medical School Boston Massachusetts