1. Department of Intensive Care Copenhagen University Hospital Copenhagen Denmark
2. Section for Biostatistics, Department of Public Health University of Copenhagen Copenhagen Denmark
3. Department of Anaesthesiology, Centre for Anaesthesiological Research, Zealand University Hospital Køge Køge Denmark
4. Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
5. Department of Clinical Medicine Aalborg University Aalborg Denmark
6. Department of Anesthesiology, Centre for Cancer and Organ Dysfunction Copenhagen University Hospital Copenhagen Denmark