1. Research Center for Emergency Medicine, Department of Clinical Medicine and Emergency Department, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
2. Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
3. Prehospital Emergency Medical Services, Central Denmark Region, Aarhus, Denmark
4. Department of Anesthesia, Centre of Head and Orthopedics, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
5. Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
6. Department of Anesthesiology and Intensive Care, Odense University Hospital, Odense, Denmark
7. Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark
8. Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
9. Department of Anesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
10. Department of Medicine, Randers Regional Hospital, Randers, Denmark
11. Department of Emergency Medicine, Herlev and Gentofte University Hospital, Copenhagen, Denmark
12. Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
13. Department of Internal Medicine, Herlev and Gentofte University Hospital, Copenhagen, Denmark
14. Department of Anesthesiology and Critical Care Medicine, Children’s Hospital of Philadelphia, Pennsylvania
15. Unit of Clinical Simulation and Education, Herlev and Gentofte University Hospital, Copenhagen, Denmark
16. Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg, Denmark
17. Department of Anesthesiology and Intensive Care, Horsens Regional Hospital, Horsens, Denmark
18. Department of Cardiology, Herlev and Gentofte University Hospital, Copenhagen, Denmark
19. Copenhagen Emergency Medical Services, University of Copenhagen, Copenhagen, Denmark
20. Department of Anesthesiology, Zealand University Hospital, Køge, Denmark
21. Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
22. Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
23. Institute of Public Health, Charité-Universitätsmedizin Berlin, Berlin, Germany
24. Department of Cardiology, Viborg Regional Hospital, Viborg, Denmark