1. Medical Clinic II (Cardiology/Angiology/Intensive Care Medicine), University Heart Center Luebeck, University Hospital Schleswig-Holstein (G.F., S.D., I.E., A.J., S.d.W.-T), University of Luebeck, Germany.
2. German Center for Cardiovascular Research (Deutsches Zentrum für Herz-Kreislauf-Forschung [DZHK]), Partner Site Hamburg/Kiel/Lübeck, Luebeck, Germany (G.F., S.D., I.E., A.J., S.d.W.-T).
3. Department of Internal Medicine/Cardiology, Heart Center Leipzig–University Hospital, Germany (G.F., J.B., S.D., I.E., S.E., N.M., P.L., K.F., S.d.W.-T, M.S., G.S., H.T.).
4. Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Germany (C.J.).
5. Institute of Medical Biometry and Statistics and Center for Clinical Trials (R.V.), University of Luebeck, Germany.