1. William Harvey Institute, Queen Mary University of London, London, UK
2. Emergency Department, Royal London Hospital, Barts Health NHS Trust, London, UK
3. Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
4. Department of Emergency Medicine, Hamad General Hospital, Doha, Qatar
5. Emergency Department, Aarhus University Hospital, Aarhus, Denmark
6. Institute of Public Health, University of Cambridge School of Clinical Medicine, Cambridge, UK
7. Wolfson Institute, Queen Mary University of London, London, UK