1. Department of Anesthesia and Intensive Care Medicine, Operational Services Landspitali ‐ The National University Hospital of Iceland Reykjavik Iceland
2. Department of Anesthesiology and Critical Care Yale New Haven Hospital New Haven Connecticut USA
3. Department of Anesthesia and Intensive Care Sahlgrenska University Hospital Gothenburg Sweden
4. Faculty of Medicine University of Iceland Reykjavik Iceland
5. Department of Medicine University of Wisconsin School of Medicine and Public Health Madison Wisconsin USA
6. Department of Anesthesiology University of Minnesota Medical School Minneapolis Minnesota USA
7. Department of Laboratory Medicine University of Washington Seattle Washington USA
8. Department of Anesthesiology University of Wisconsin School of Medicine and Public Health Madison Wisconsin USA