1. Cardiothoracic Surgery and Anaesthesiology Department of Surgical Sciences Uppsala University Uppsala Sweden
2. Department of Cardiothoracic Anaesthesia and Intensive Care Division of Cardiovascular Medicine Department of Medical and Health Sciences Linköping University Hospital Linköping University Linköping Sweden
3. Anaesthesiology and Intensive Care Karolinska University Hospital Huddinge Stockholm Sweden
4. Hedenstierna Laboratory, Anaesthesiology and Intensive Care Department of Surgical Sciences Uppsala University Uppsala Sweden