1. Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA
2. Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
3. Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy
4. Division of Cardiology, Pauley Heart Center, Virginia Commonwealth University, Richmond, VA
5. Department of Kinesiology & Health Sciences, College of Humanities & Sciences, Virginia Commonwealth University, Richmond, VA
6. Department of Physical Therapy, College of Applied Health Sciences, University of Illinois Chicago, Chicago, IL, USA
7. Department of Pharmacotherapy and Outcome Sciences, Virginia Commonwealth University, Richmond, VA, USA
8. Division of Cardiology, University of Virginia, Charlottesville, VA