1. Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark.
2. Department of Intensive Care Medicine, Aarhus University Hospital, Aarhus, Denmark.
3. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
4. Department of Clinical Research and Emergency, Amager and Hvidovre Hospital, Hvidovre, Denmark.
5. Department of Cardiothoracic and Vascular Surgery, Anaesthesia Section, Aarhus University Hospital, Aarhus, Denmark.
6. Department of Otolaryngology, Goedstrup Hospital, Central Denmark Region, Glostrup, Denmark.
7. Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark.