1. Herzchirurgie, Herz-Diabetes-Zentrum Nordrhein-Westfalen, Bad Oeynhausen, Germany
2. Deutsche Gesellschaft für Thorax-, Herz- und Gefäßchirurgie, DGTHG, Berlin, Germany
3. Department of Cardiac and Vascular Surgery; Clinical Perfusion; MediClin Herzzentrum Coswig, Coswig, Germany
4. Department of Cardiac and Vascular Surgery, Universitätsmedizin Mainz, Mainz, Germany
5. Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum Berlin, Berlin, Germany
6. Department of Cardiovascular Surgery, University Hospital Giessen, Giessen, Germany