1Nuffield Department of Surgical Sciences, John Radcliffe Hospital
2University of Oxford, Oxford, the School of Clinical Sciences, University of Bristol, and Bristol Royal Infirmary, Bristol
3Centre for Statistics in Medicine, Botnar Research Centre
4Health Economics Research Centre, Nuffield Department of Population Health
5Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York Presbyterian Hospital
6Department of Cardiac Surgery, Royal Infirmary of Edinburgh, Edinburgh
7Center for Cardiovascular Research and Development, American Heart of Poland
8Department of Cardiac Surgery, Austin Health, Melbourne, VIC, Australia
9Royal Papworth Hospital, Cambridge
10Department of Cardiac Surgery, Freeman Hospital, Newcastle
11Department of Cardiac Surgery, Medical University of Silesia
12Department of Cardiac Surgery, King’s College Hospital
13London, the Department of Cardiac Surgery, Royal Infirmary, Manchester
14Department of Cardiac and Thoracic Surgery, Wroclaw Medical University, Wroclaw, Katowice
15Department of Cardiac Surgery, University Hospital of Wales, Cardiff
16Heart Institute of Pernambuco, Recife, Brazil
17Royal Brompton Hospital and Imperial College London
18Department of Cardiac Surgery, Royal Sussex County, Brighton
19Mount Sinai St. Luke’s
20Norwich Medical School, University of East Anglia, and Norfolk and Norwich University Hospital, Norwich