1. Cleveland Clinic Lerner College of Medicine (A.K.F., M.K.C.), Case Western Reserve University, OH.
2. Department of Cardiovascular Medicine, Cleveland Clinic, OH (M.K.C., K.G.T., S.A.T.).
3. Department of Biomedical Engineering (A.M., M.F.), Case Western Reserve University, OH.
4. Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH (A.M.).
5. Department of Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, MN (Z.I.A., P.A.F., S.K., P.A.N., ).
6. Department of Cardiovascular Diseases, University of Zagreb School of Medicine & University Hospital Center Zagreb, Croatia (M.C.).
7. Division of Cardiovascular Medicine, Department of Medicine, School of Medicine & Public Health, University of Wisconsin (M.M.K.).
8. William S. Middleton Veterans Hospital, Madison, WI (M.M.K.).
9. Division of Cardiovascular Medicine, Stanford University, CA (S.M.N., M.V.P., M.P.T., P.J.W.).
10. Veterans Affairs Palo Alto Health Care System, CA (S.M.N., M.V.P., M.P.T., P.J.W.).
11. Division of Cardiology, Northwestern University, Feinberg School of Medicine, Chicago, IL (R.S.P.).
12. National Heart Lung Institute & Centre for Cardiac Engineering, Imperial College London, United Kingdom (N.S.P.).
13. Duke Clinical Research Institute, Duke University Medical Center, Durham, NC (J.P.P.).
14. Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD (N.A.T.).
15. Center for Digital Health, Stanford University School of Medicine, CA (M.P.T.).