Affiliation: | 1. Cardiac Rehabilitation Department, Baylor Hamilton Heart and Vascular Hospital, Dallas, Texas;5. Electrophysiology/Pacemaker Department, Baylor Hamilton Heart and Vascular Hospital, Dallas, Texas;2. Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona;3. Division of Biostatistics, The University of Texas School of Public Health, Dallas, Texas;4. Department of Pharmacy, Baylor University Medical Center at Dallas, Dallas, Texas;6. Division of Cardiology, Department of Internal Medicine, Baylor University Medical Center at Dallas and Baylor Hamilton Heart and Vascular Hospital, Dallas, Texas |