1. Support Center for Advanced Neuroimaging University Institute of Diagnostic and Interventional Neuroradiology Inselspital University of Bern Bern 3010 Switzerland
2. Institute of Radiology and Neuroradiology Tiefenau Hospital Bern 3004 Switzerland
3. Department of Neurology Inselspital University of Bern Bern 3010 Switzerland
4. Department of Neurosurgery Inselspital University of Bern Bern 3010 Switzerland