1. Critical Care Research Group Nuffield Department of Clinical Neurosciences University of Oxford Oxford UK
2. National Institute for Health ResearchOxford Biomedical Research Centre Oxford UK
3. Therapies Clinical Service Unit Oxford University Hospitals NHS Foundation Trust Oxford UK
4. Department of Engineering Science Institute of Biomedical EngineeringUniversity of Oxford Oxford UK
5. Kadoorie Centre for Critical Care Research and Education Oxford University Hospitals NHS Trust Oxford UK