1 Department of Cardiovascular Disease, John Ochsner Heart and Vascular Institute, Ochsner Clinical School - The University of Queensland School of Medicine, New Orleans, Louisiana, USA. Electronic address: clavie@ochsner.org.
2 Department of Physical Therapy, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, Illinois, USA.
3 VCU Pauley Heart Center, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, USA.
4 Department of Cardiovascular Disease, John Ochsner Heart and Vascular Institute, Ochsner Clinical School - The University of Queensland School of Medicine, New Orleans, Louisiana, USA.