1. Department of Internal Medicine, John H. Stroger Hospital of Cook County, 1901 West Harrison Street, Chicago, IL 60612, USA
2. Department of Cardiothoracic and Vascular Surgery, Barnabas Heart Hospitals, West Orange, NJ 07052, USA
3. Department of Radiology, John H. Stroger Hospital of Cook County, 1901 West Harrison Street, Chicago, IL 60612, USA
4. Department of Cardiology, John H. Stroger Hospital of Cook County, 1901 West Harrison Street, Chicago, IL 60612, USA