Affiliation: | 1. Division of Cardiovascular Medicine, Department of Medicine, Stanford University, Stanford, Calif;2. Stanford Cardiovascular Institute, Department of Medicine, Stanford University, Stanford, Calif;3. Department of Clinical Physiology and Department of Medical and Health Sciences, Linköping University, Linköping, Sweden;4. Stanford Sports Cardiology, Stanford University, Stanford, Calif;5. Sport and Exercise Medicine Division, Department of Medicine, University of Padova, Italy;6. Cardiac Insight Inc., Bellevue, Wash |