1. Department of Anaesthesiology and Intensive Care, Department of Medical and Health SciencesLinköping University Linköping Sweden
2. Department of Medical and Health SciencesLinköping University Linköping Sweden
3. Anaesthetics, Operations and Speciality Surgery Centre, Department of Medical and Health SciencesLinköping University Linköping Sweden
4. Department of Cardiothoracic Surgery, Department of Medical and Health SciencesLinköping University Linköping Sweden