1. Institute of Clinical Trials and Methodology, University College London, London, UK
2. Heart Clinic and Radiology Clinic, Tartu University Hospital, Tartu, Estonia
3. Estonian State Agency of Medicines (Ravimiamet), Tartu, Estonia
4. Cardiac Surgery Department, European Hospital, Rome, Italy
5. Cardiac Surgery Department, Weill Cornell University, New York, NY, USA
6. Department of Cardiothoracic Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
7. University of Birmingham, Birmingham, UK
8. Department of Cardiothoracic and Vascular Surgery, German Heart Center Berlin, Berlin, Germany
9. Division of Cardiovascular Surgery, Charité, Berlin, Germany
10. German Centre of Cardiovascular Research, DZHK, Site Berlin, Germany
11. Department of Health Science and Technology, ETH Zürich, Zurich, Switzerland
12. Department of Cardiovascular Surgery, University Heart Centre Freiburg – Bad Krozingen, Freiburg, Germany
13. Medical Faculty of the Albert-Ludwigs-University of Freiburg, Freiburg, Germany