1. Division of Cardiovascular Disease Department of Medicine University of Alabama at Birmingham AL
2. Division of Cardiovascular Medicine and Department of Radiology Brigham and Women's Hospital Heart and Vascular Center Harvard Medical School Boston MA
3. Veterans Affairs Medical Center Birmingham AL
4. Department of Biostatistics University of Alabama at Birmingham AL
5. Department of Electrical and Computer Engineering Auburn University Auburn AL
6. Valley Medical Group Ridgewood NJ