1. Neurovascular Research Laboratory, School of Health, Sport and Professional Practice, Faculty of Life Sciences and Education University of South Wales Pontypridd UK
2. Department of Anaesthesia Wrexham Maelor Hospital Wrexham UK
3. Department of Anaesthetics University Hospital of Wales Cardiff UK
4. Department of Anaesthetics, Princess of Wales Hospital, Velindre University NHS Trust Health Education & Improvement Board Wales (HEIW) Wales UK
5. North West School of Surgery Health Education England North West Manchester UK
6. University of York York UK
7. Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery Baylor College of Medicine Houston USA
8. Department of Cardiovascular Surgery Texas Heart Institute Houston Texas USA
9. Department of Cardiovascular Surgery CHI St Luke's Health‐Baylor St Luke's Medical Center Houston Texas USA
10. Department of Surgery University Hospital of Wales Cardiff UK