1. Department of Anaesthesiology Næstved‐Slagelse‐Ringsted Hospitals Næstved Denmark
2. Department of Regional Health Research The Faculty of Health Sciences University of Southern Denmark Odense Denmark
3. Department of Anaesthesiology Bispebjerg and Frederiksberg University Hospital Copenhagen Denmark
4. Department of Clinical Medicine Faculty of Health and Medical Sciences Copenhagen University Copenhagen Denmark
5. Orthopedic Research Unit Department of Orthopaedic Surgery and Traumatology Odense University Hospital Odense Denmark
6. Department of Clinical Research University of Southern Denmark Odense Denmark
7. Department of Anaesthesia Gildhøj Private Hospital Brøndby Denmark
8. Department of Orthopaedics Bispebjerg and Frederiksberg University Hospital Copenhagen Denmark
9. Department of Anaesthesiology and Intensive Care Odense University Hospital Odense Denmark
10. Department of Orthopaedic Surgery Zealand University Hospital Køge Denmark
11. Department of Orthopaedic Surgery Næstved‐Slagelse‐Ringsted Hospitals Næstved Denmark
12. Centre for Anaesthesiological Research Department of Anaesthesiology Zealand University Hospital Køge Denmark
13. Department of Cardiology Holbæk Hospital Holbæk Denmark