1 Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School, The University of Queensland School of Medicine, New Orleans, Louisiana. Electronic address: clavie@ochsner.org.
2 Division of Cardiovascular Medicine, Henry Ford Hospital, Detroit, Michigan.
3 Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School, The University of Queensland School of Medicine, New Orleans, Louisiana.