1 Research Center for Emergency Medicine, Aarhus University Hospital, Nørrebrogade 44, Building 1B, 8000 Aarhus C, Denmark; Department of Internal Medicine and Clinical Research Unit, Randers Regional Hospital, Skovlyvej 15, 8930 Randers NE, Denmark.
2 Department of Anaesthesiology and Intensive Care, Aarhus University Hospital, Palle Juul-Jensens Blvd. 99, 8200 Aarhus N, Denmark. Electronic address: kk@cesu.au.dk.
3 Research Center for Emergency Medicine, Aarhus University Hospital, Nørrebrogade 44, Building 1B, 8000 Aarhus C, Denmark; Department of Internal Medicine and Clinical Research Unit, Randers Regional Hospital, Skovlyvej 15, 8930 Randers NE, Denmark; Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Blvd. 99, 8200 Aarhusv, Denmark. Electronic address: bo.loefgren@clin.au.dk.