1 Department of Medical Statistics, University Medical Center Göttingen, Humboldtallee 32, 37073 Göttingen, Germany.
2 DZHK (German Center for Cardiovascular Research), Partner Site Göttingen, Robert-Koch str. 40, 37075 Göttingen, Germany.
3 Department of Cardiology, Sana Klinikum Offenbach, Starkenburgring 66, 63069 Offenbach am Main, Germany.
4 German Society for Thoracic and Cardiovascular Surgery, Langenbeck-Virchow-Haus, Luisenstraße 58/59, 10117 Berlin, Germany.
5 Department for Cardiac and Pediatric Cardiac Surgery, Heart Center Duisburg, EVKLN, Gerrickstr. 21, 47137 Duisburg, Germany.
6 Department of Cardiology, Robert-Bosch-Krankenhaus, Auerbachstraße 110, 70376 Stuttgart, Germany.
7 Clinic for Thoracic and Cardiovascular Surgery, Heart and Diabetes Center Northrhine-Westphalia, Georgstr 11, 32545 Bad Oeynhausen, Germany.
8 Goethe University Frankfurt, Department of Medicine, Institute of Biostatistics and Mathematical Modelling, Theodor-Stern-Kai 7, 60590 Frankfurt Main, Germany.
9 DZHK (German Centre for Cardiovascular Research), Partner Site Rhine/Main, Theodor-Stern-Kai 7, 60590 Frankfurt Main, Germany.
10 Department of Cardiology, St.-Johannes-Hospital Dortmund, Johannesstrasse 9-17, 44137 Dortmund, Germany.
11 Department of Cardiothoracic Surgery, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany.
12 Medical Faculty of the Albert-Ludwigs-University Freiburg, University Hospital Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany.
13 Department of Cardiovascular Surgery, Heart Centre Freiburg University, Freiburg, Germany.
14 Department of Cardiology and Angiology, University Hospital Gießen, Klinikstr. 33, 35392 Gießen, Germany.
15 Department of Cardiology, Kerckhoff Heart and Thorax Center, Benekestraße 2-8, D-61231 Bad Nauheim, Germany.
16 CTU Bern, University of Bern, Mittelstrasse 43, 3012 Bern, Switzerland.
17 Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland.
18 Clinic for Cardiothoracic and Vascular Surgery/Heart Center, University Medical Center Göttingen, Robert-Koch Str. 40, 37075 Göttingen, Germany.
19 Clinic for Cardiology and Pulmonology, Heart Center, University Medical Center Göttingen, Robert-Koch Str. 40, 37075 Göttingen, Germany.
20 Department of Cardiac and Thoracic Vascular Surgery, University Heart Center Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany.
21 DZHK (German Centre for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck, Lübeck, Germany.
22 Department of Cardiology, University Heart Center Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany.