1. Academic Department of Anaesthesia and Peri‐operative Medicine Sheffield Teaching Hospitals NHS Foundation Trust Sheffield UK
2. Centre for Applied Health and Social Care Research Sheffield Hallam University Sheffield UK
3. National Spinal Injuries Centre Buckinghamshire Hospitals NHS Trust Stoke Mandeville UK
4. University of Nottingham Nottingham UK
5. Critical Care Department Northampton General Hospital Northampton UK
6. Department of Anaesthesia and Critical Care University Hospitals of Leicester NHS Trust Leicester UK