1. Medical Sciences Division University of Oxford Oxford UK
2. Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen University Hospital of Essen, University Duisburg‐Essen Essen Germany
3. Department of Medicine, Faculty of Medicine Imperial College London London UK
4. School of Postgraduate Studies Royal College of Surgeons of Ireland Dublin Ireland
5. Department of Cardiothoracic Surgery St Bartholomew's Hospital, Barts Health NHS Trust London UK
6. Department of Cardiothoracic Surgery Royal Papworth Hospital, Royal Papworth Hospital NHS Trust Cambridge UK
7. Department of Cardiothoracic, Transplant and Vascular Surgery Hannover Medical School Hannover Germany
8. Department of Cardiothoracic Surgery Hammersmith Hospital, National Heart and Lung Institute, Imperial College Healthcare NHS Trust London UK