Alejandro Velasco1, Jim Stirrup2, Eliana Reyes2, Fadi G Hage3,4. 1. Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, Lyons Harrison Research Building 306, 1900 University Blvd, Birmingham, AL, 35294, USA. avelasco-delacuesta@uabmc.edu. 2. Royal Brompton and Harefield Hospitals, and King's College London, London, UK. 3. Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, Lyons Harrison Research Building 306, 1900 University Blvd, Birmingham, AL, 35294, USA. 4. Section of Cardiology, Birmingham Veterans Affairs Medical Center, Birmingham, AL, USA.