1. Department of Anaesthesia; Bispebjerg 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. Juliane Marie Centre - Department of Anaesthesia; 4013 Rigshospitalet; Copenhagen University Hospital; Copenhagen Denmark