1. Department of Anesthesiology and Intensive Care Medicine OUH Svendborg Hospital Svendborg Denmark
2. Intensive Care Unit Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
3. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
4. Department of Nursing University College Copenhagen Copenhagen Denmark
5. Department of Anesthesiology Nordsjællands Hospital University of Copenhagen Hillerød Denmark
6. Department of Anesthesiology Holbæk Hospital Holbæk Denmark