T Sean Dunn1,2, Fadi G Hage3,4. 1. Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, LHRB 326, 701 19th Street South, Birmingham, AL, 35294, USA. 2. Section of Cardiology, Birmingham Veterans Affairs Medical Center, Birmingham, AL, USA. 3. Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, LHRB 326, 701 19th Street South, Birmingham, AL, 35294, USA. fadihage@uab.edu. 4. Section of Cardiology, Birmingham Veterans Affairs Medical Center, Birmingham, AL, USA. fadihage@uab.edu.