Affiliation: | 1. Cardiovascular Medicine Division, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania;2. St. Luke''s Mid-America Heart Institute, University of Missouri—Kansas City, Kansas City, Missouri;3. Division of Cardiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts;4. Ronald Reagan UCLA Medical Center, University of California–Los Angeles, Los Angeles, California;6. St. Joseph Mercy Hospital, Ann Arbor, Michigan;5. John Ochsner Heart and Vascular Institute, Ochsner Medical Center, New Orleans, Louisiana |