1. Juliane Marie Centre - Department of Anesthesia; 4013 Rigshospitalet; Copenhagen University Hospital; Copenhagen Denmark
2. Section for Transfusion Medicine; Capital Region Blood Bank; Rigshospitalet; Copenhagen University Hospital; Copenhagen Denmark
3. Department of Anaesthesia; Centre of Head and Orthopedics; Rigshospitalet; Copenhagen University Hospital; Copenhagen Denmark
4. Department of Anaesthesia and Intensive Care Medicine; Herlev Hospital; University of Copenhagen; Copenhagen Denmark
5. Department of Anaesthesiology; Department of Neuroanaesthesia and Intensive Care; Rigshospitalet; Copenhagen University Hospital; Copenhagen Denmark