1. Department of Orthopaedic Surgery Clinical Orthopaedic Surgery Hvidovre (CORH), Copenhagen University Hospital Hvidovre Hvidovre Denmark
2. Department of Anaesthesiology Copenhagen University Hospital Hvidovre Hvidovre Denmark
3. Section of Surgical Pathophysiology Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
4. Department of Anaesthesiology Lillebaelt Hospital – Vejle Vejle Denmark
5. Department of Orthopaedic Surgery Lillebaelt Hospital – Vejle Vejle Denmark