1. Odense University Hospital, Denmark (A.B.).
2. Cardiovascular Section, University of Oklahoma Health Science Center, Oklahoma City (S. Stavrakis).
3. Heart Research Institute (B.F.), University of Sydney, Australia.
4. Barts Health NHS Trust, London, United Kingdom (S.A.).
5. Department of Cardiology, University of Modena and Reggio Emilia, Italy (G.B.).
6. St. George’s University of London, United Kingdom (J.A.C.).
7. Cardiovascular Division (C.K.C.), University of Sydney, Australia.
8. Department of Population and Quantitative Health Sciences (E.D.), University of Massachusetts Medical School, Worcester.
9. Department of Cardiology, Karolinska Institute, Stockholm, Sweden (J.E.).
10. Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA (M.M.G.).
11. Department of Cardiology, Rabin Medical Center, Petah-Tivka, Israel (G.G.).
12. Hackensack University Medical Center, NJ (T.G.).
13. Chinese PLA General Hospital, Beijing (Y.G.).
14. Cardiology Division, McMaster University, Hamilton, Canada (J.S.H.).
15. StopAfib.org, Decatur, TX (M.T.H.).
16. Lund University, Sweden (L.G.).
17. Liverpool Centre for Cardiovascular Science, University of Liverpool, United Kingdom (G.Y.H.L.).
18. Arrhythmia Alliance, London, United Kingdom (T.L.).
19. University of Glasgow, United Kingdom (P.W.M.).
20. Department of Cardiology, University of California, San Francisco (G.M.M.).
21. Department of Medicine (D.D.M.), University of Massachusetts Medical School, Worcester.
22. Centre for Cardiovascular Health, Edinburgh Napier University, United Kingdom (L.N.).
23. Charles Perkins Centre, University of Sydney, Australia (J.O.).
24. Stanford University Medical Center, Palo Alto, CA (M.V.P., M.P.T.).
25. University Heart & Vascular Center Hamburg Eppendorf, Germany (R.B.S.).
26. Department of Public Health, Health Service Executive West, Galway, Ireland (B.S.).
27. Scripps Research Translational Institute, La Jolla, CA (S. Steinhubl).