1. Department of Anesthesiology and Intensive Care Aarhus University Hospital Aarhus Denmark
2. Department of Clinical Medicine Aarhus University Aarhus Denmark
3. Department of Cardiothoracic Anesthesia Copenhagen University Hospital, Rigshospitalet Risskov Denmark
4. Center for Resuscitation Science, Department of Emergency Medicine Beth Israel Deaconess Medical Center Boston MA USA
5. Department of Internal Medicine, Division of Pulmonary Critical Care, and Sleep Medicine, Beth Israel Deaconess Medical Center Boston MA USA
6. Research Center for Emergency Medicine Aarhus University Hospital Aarhus Denmark
7. Department of Medicine Randers Regional Hospital Randers Denmark
8. Prehospital Emergency Medical Services Central Denmark Region Aarhus Denmark