1 Department of Anesthesiology and Intensive Care Medicine, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Denmark. Electronic address: granfeldt@clin.au.dk.
2 Department of Anesthesiology and Intensive Care Medicine, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Denmark; Department of Cardiology, Herlev and Gentofte Hospital, Copenhagen, Denmark.
3 University of Warwick, Warwick Medical School, Coventry, United Kingdom; Royal United Hospital, Bath, United Kingdom.
4 Southmead Hospital, North Bristol NHS Trust, Bristol, United Kingdom.
5 Department of Anesthesiology and Intensive Care Medicine, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Denmark; Prehospital Emergency Medical Services, Central Denmark Region, Denmark; Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg, Denmark.