1. Central London School of Anaesthesia, London, UK
2. William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
3. Department of Anaesthesia, Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK
4. Association for Cardiothoracic Anaesthesia and Critical Care, UK
5. University Hospitals Bristol NHS Foundation Trust, Bristol, UK
6. The Royal Wolverhampton NHS Trust, Wolverhampton, UK
7. Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
8. Royal Cornwall Hospitals NHS Trust, Truro, UK
9. Department of Anaesthesia and Intensive Care, Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK