1. Institute of Sport Exercise & Health, University College London, London, UK;
2. Department of Sport & Exercise Science, University of Portsmouth, Portsmouth, UK;
3. Intensive Care Unit, Royal Surrey County Hospital, Guildford, UK;
4. Norwich Medical School, University of East Anglia, Norwich, UK;
5. Department of Anaesthesia, University Hospitals Plymouth, Plymouth, UK;
6. Peninsula School of Medicine, Plymouth, UK;
7. Division of Surgery & Interventional Science, University College London, London, UK;
8. Intensive Care Unit, Royal Brompton Hospital, London, UK;
9. Research Institute for Sport & Exercise Science, Liverpool John Moores University, UK;
10. Formerly Consultant University Hospitals Southampton NHS Trust, Southampton, UK;
11. Centre for Human Health and Performance, University College London, London, UK