1. University Heart Center, Hamburg, Germany (S.W., C.M.).
2. University Hospital Lübeck, Med.Klinik II, and German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Germany (R.R.T., C.-H.H.).
3. University Heart Center Cologne, Germany (D.S., A.S.).
4. Department of Medicine I, University Hospital Munich, Ludwig-Maximilian’s University Munich and German Center for Cardiovascular Research (DZHK), partner site Munich Heart Alliance, Germany (S.K., M.F.S.).
5. Institute of Medical Biometry and Epidemiology, University Medical Center Eppendorf, Hamburg, Germany (K.W.).
6. Semmelweis Medical University, Budapest, Hungary (L.G.).
7. Asklepios Klinik St Georg, Hamburg, Germany (A.M., K.-H.K.).
8. Asklepios Proresearch, Hamburg, Germany (M.S.).
9. University Hospital Würzburg, Germany (P.N.).
10. University Hospital Münster, Germany (L.E.).
11. Klinikum Lüdenscheid, Witten/Herdecke University, Germany (H.B.).
12. Biotronik SE & Co. KG, Berlin, Germany (B.W.).