1. Department of Anaestesia and Intensive Care Sahlgrenska University Hospital Gothenburg Sweden
2. Department of Anesthesia and Intensive Care, Sahlgrenska Academy, Institute of Clinical Sciences University of Gothenburg Gothenburg Sweden
3. Department of Medicine, Solna, Clinical Epidemiology Division Stockholm Sweden
4. Department of Cardiology Södersjukhuset Stockholm Sweden
5. Department of Clinical Science and Education, Center for Resuscitation Science Karolinska Institutet, Södersjukhuset Stockholm Sweden
6. Perioperative Medicine and Intensive Care Karolinska University Hospital Solna Sweden
7. Department of Physiology and Pharmacology, Section of Anesthesiology and Intensive Care Medicine Karolinska Institutet Stockholm Sweden