1. Institute of Clinical Medicine, Neurosurgery of NeuroCenter, Kuopio University Hospital, and Neurosurgery University of Eastern Finland Kuopio Finland
2. Neurosurgery of NeuroCenter Kuopio University Hospital Kuopio Finland
3. NeuroCenter, Hemorrhagic Brain Pathology Research Group Kuopio University Hospital Kuopio Finland
4. Department of Neurosurgery Tampere University Hospital Tampere Finland
5. Faculty of Medicine and Medical Technology Tampere University Tampere Finland
6. Department of Clinical Radiology Kuopio University Hospital Kuopio Finland
7. School of Medicine, Faculty of Health Sciences Institute of Clinical Medicine University of Eastern Finland Kuopio Finland