1Department of Cardiology, St. Antonius Hospital, Nieuwegein, the Netherlands (L.V.A.B.).
2Amsterdam University Medical Center, Amsterdam, the Netherlands (L.V.A.B.).
3Riverside Methodist Hospital, Columbus, OH (A.A.).
4King's College Hospital, London, United Kingdom (F.M.).
5I Klinika Zaburzeń Rytmu Serca, Narodowy Instytut Kardiologii, Warszawa, Poland (M.S.).
6Odense University Hospital, Odense, Denmark (J.B.J.).
7Kepler University Hospital, Linz, Austria (K.S.).
8University of Virginia School of Medicine, Charlottesville, VA (P.K.M., O.M.).
9Hospital Universitario Reina Sofia, Cordoba, Spain (J.C.).
10Sutter Health, Redwood City, CA (G.E.).
11Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany (D.D.).
12University Heart Center, University Hospital Zurich, Zurich, Switzerland (A.B.).
13Texas Health Heart and Vascular Specialists, Fort Worth, TX (T.T.).
14Northwell Health, New Hyde Park, NY (L.M.E.).
15Medical Spectrum Twente, Enschede, the Netherlands (J.M.v.O.).
16Clinique du Millénaire, Montpellier, France (N.C.).
17Mayo Clinic, Rochester, MN (P.F.).
18Medical University of Vienna, Vienna, Austria (M.G.).
19Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan (N.N.).
20Medtronic Inc, Mounds View, MN (C.W., J.D.L., J.L., A.E.T., T.R.H.).
21Christchurch Hospital, Christchurch, New Zealand (I.C.).