1. Division of Cardiology (T.A., S.M., F.I., J.G., J.T., R.D.), Cook County Health, Chicago, IL.
2. Division of Cardiology, Rush Medical College, Chicago, IL (T.A., S.M., J.G., J.T., R.D.).
3. Division of Cardiology and Vascular Medicine, St. Elizabeth’s Medical Center, Boston, MA (F.I.).
4. Department of Radiology (A.B.), Cook County Health, Chicago, IL.