1. Department of Clinical Sciences Malmö, University Hospital of Skåne, Sweden;
2. Department of Emergency Medicine, Karolinska University Hospital, Huddinge, Stockholm, Sweden;
3. Division of Family Medicine and Primary Care, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden;
4. Department of Medical Sciences, Cardiovascular Epidemiology, Uppsala University, Uppsala, Sweden;
5. Department of Surgical and Perioperative Science, Umeå University, Umeå, Sweden;
6. Department of Operation and Intensive Care, Halmstad Hospital, Halmstad, Sweden;
7. Anaesthesiology and Intensive Care Medicine, Lund University, Lund, Sweden