1. Department of Cardiothoracic Transplantation and Mechanical Circulatory Support, Royal Brompton & Harefield NHS Foundation Trust, Harefield Hospital, London, UK
2. Department of Cardiothoracic Surgery, University Hospital of Cologne, Cologne, Germany
3. Department of Anaesthesiology, University Hospital Gottingen, Gottingen, Germany
4. Department of Cardiac Surgery, University Hospital Oldenburg, European Medical School Oldenburg-Groningen, Carl von Ossietzky University Oldenburg, Oldenburg, Germany
5. Department of Thoracic and Cardiovascular Surgery, Johann-Wolfgang-Goethe University, Frankfurt am Main, Germany