1. Cardiovascular Medicine, Department of Medicine, Boston University School of Medicine, MA (E.J.B.).
2. Department of Epidemiology, Boston University School of Public Health, MA (E.J.B.).
3. Division of Research, Kaiser Permanente Northern California, Oakland (A.S.G.).
4. Departments of Epidemiology, Biostatistics, and Medicine, University of California, San Francisco (A.S.G.).
5. Departments of Medicine, Health Research, and Policy (A.S.G.), Stanford University, CA.
6. Division of Cardiovascular Sciences (P.D.-N., L.S.C.), National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD.
7. Department of Neurology, Center for Genomic Medicine, and McCance Center for Brain Health, Massachusetts General Hospital, Boston (C.D.A.).
8. Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, UK (B.C.).
9. Cardiovascular Division, Department of Medicine, University of Minnesota Medical School, Minneapolis (L.Y.C.).
10. Department of Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, the Netherlands (H.J.G.M.C.).
11. Heart Research Institute, Charles Perkins Centre, and Concord Hospital Department of Cardiology, Concord Clinical School, University of Sydney, Australia (B.F.).
12. StopAfib.org, American Foundation for Women’s Health, Decatur, TX (M.T.H.).
13. Population Health Research Institute, McMaster University, Hamilton, ON, Canada (J.S.H.).
14. Clinical and Translational Neuroscience Unit, Feil Family Brain and Mind Research Institute and Department of Neurology, Weill Cornell Medicine, New York, NY (H.K.).
15. Office of Biostatistics Research (D.-Y.K.), National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD.
16. Department of Medicine, Division of Cardiology, UT Southwestern Medical Center, Dallas, TX (M.S.L.).
17. Division of Cardiology and Duke Clinical Research Institute, Duke University Medical Center, Durham, NC (R.D.L., J.P.P., S.M.A.-K.).
18. Cardiovascular Research Center and Cardiac Arrhythmia Service, Massachusetts General Hospital, Harvard Medical School, Boston (S.A.L.).
19. Department of Medicine, Division of Cardiology, University of Massachusetts Medical School, Worcester (D.D.M.).
20. Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN (P.A.N.).
21. Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany (R.B.S.).
22. DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Luebeck, Germany (R.B.S.).
23. Division of General Internal Medicine, Massachusetts General Hospital, and Harvard Medical School, Boston, (D.E.S.).
24. Department of Cardiology, University of Groningen, University Medical Center Groningen, the Netherlands (I.C.V.G., R.G.T.).
25. Department of Cardiology, Martini Hospital, Groningen, the Netherlands (R.G.T.).
26. Center for Digital Health (M.P.T.), Stanford University, CA.
27. Veterans Affairs Palo Alto Health Care System, CA (M.P.T.).