1 Emergency Medical Services of the Hradec Kralove Region, Hradec Kralove, Czech Republic; Department of Anaesthesiology and Intensive Care Medicine, University Hospital Hradec Kralove, Czech Republic. Electronic address: anatolij.truhlar@gmail.com.
2 Research Group Emergency and Disaster Medicine, Vrije Universiteit Brussels, Elsene, Belgium.
3 Warwick Medical School, University of Warwick, Coventry, United Kingdom; Heart of England NHS Foundation Trust, Bordesley Green East, Birmingham, United Kingdom.