1. Department of Radiology, Neurovascular Section, Copenhagen University Hospital, Rigshospitalet, Denmark
2. Department of Neurology, Copenhagen University Hospital, Rigshospitalet, Denmark
3. Section for Transfusion Medicine, Capital Region Blood Bank, Rigshospitalet, Denmark
4. Department of Anesthesiology, Centre of Head and Orthopedics, Copenhagen University Hospital, Rigshospitalet, Denmark
5. Department of Neuroanesthesiology, Copenhagen University Hospital, Rigshospitalet, Denmark