1. NPIS Edinburgh & Royal Infirmary of Edinburgh Edinburgh UK
2. School of Social and Community Medicine University of Bristol Bristol UK
3. Guy's and St Thomas' NHS Foundation Trust and King's Health Partners London UK
4. Newcastle Hospitals NHS Foundation Trust Newcastle upon Tyne UK
5. Emergency Medicine Research Group Department of Emergency Medicine Royal Infirmary of Edinburgh Edinburgh UK
6. Royal Infirmary of Edinburgh Edinburgh UK
7. Pharmacology Toxicology & Therapeutics University/BHF Centre for Cardiovascular Science University of Edinburgh Edinburgh UK
8. King's College London London UK