1. Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany (C.-H.K., A.R., D.G., T.F., S.M., R.R.T., B.R., C.L., T.M., F.S., O.I., Y.H., H.A., I.D., M.S., A.M., K.-H.K., F.O.).
2. University Heart Center Luebeck, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), Division of Elektrophysiology, University Hospital Schleswig-Holstein, Germany (C.-H.K., T.F., R.R.T.).
3. Asklepios Proresearch, Hamburg, Germany (P.W.).
4. Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangzhou, China (F.O.).