Affiliations

• ¹ Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, UK; Critical Care Unit, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK. Electronic address: k.couper@warwick.ac.uk.
• ² Division of Emergency Medicine, Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; Department of Emergency Services and Sunnybrook Research Institute, Sunnybrook Health Science Centre, Toronto, Ontario, Canada.
• ³ Department of Emergency Medicine, Baylor University Medical Center, Dallas, TX, USA.
• ⁴ Centre for Advancing Health Outcomes, St. Paul's Hospital, Vancouver, BC, Canada; Department of Emergency Medicine, University of British Columbia, Vancouver, BC, Canada; British Columbia Emergency Health Services, BC, Canada.
• ⁵ Prehospital Emergency Medical Services, Central Denmark Region, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.