1. Division of Cardiovascular Disease; University of Alabama at Birmingham; Birmingham AL USA
2. Division of Cardiology; Cheng Hsin General Hospital; Taipei Taiwan
3. Division of Cardiovascular Medicine and Department of Radiology; Brigham and Women's Hospital; Harvard Medical School; Boston MA USA
4. Division of Internal Medicine; University of Alabama at Birmingham; Birmingham AL USA
5. Department of Internal Medicine; University of Missouri-Kansas City; Kansas City MO USA
6. Department of Medicine; Rochester General Hospital; Rochester NY USA