1. Department of Anaesthesiology and Intensive Care Institute of Clinical Sciences Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
2. Department of Anaesthesiology Angereds Hospital Region Västra Götaland Gothenburg Sweden
3. Department of Cardiology Institute of MedicineSahlgrenska AcademyUniversity of Gothenburg Gothenburg Sweden
4. Department of Anaesthesiology and Intensive Care Region Västra GötalandSahlgrenska University Hospital Gothenburg Sweden