1 Department of Medicine, Cleveland Clinic, Cleveland, Ohio.
2 Department of Medicine, Cleveland Clinic Akron General, Akron, Ohio.
3 Section of Cardiovascular Imaging, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, Cleveland, Ohio.
4 Section of Cardiovascular Imaging, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, Cleveland, Ohio. Electronic address: xub@ccf.org.