1. Department of Anaesthesia and Intensive Care Medicine, Helsinki University Hospital, HUS, Stenbäckinkatu 9, 00029 Helsinki, Finland
2. Department of Clinical Science and Education and Section of Emergency Medicine, Karolinska Institutet, Södersjukhuset, Solnavägen 1, 17177 Stockholm, Sweden
3. Department of Emergency Medicine, Helsinki University Hospital, HUS, Stenbäckinkatu 9, 00029 Helsinki, Finland
4. Faculty of Medicine, University of Helsinki, Haartmaninkatu 8, 6300014 Helsinki, Finland