1. Departments of Neuroradiology and Neurosurgery,University Hospital, University of Technology, Aachen, Germany
2. Department of Neuropathology, University Hospital, University of Technology, Aachen, Germany
3. Department of Pathology, University Hospital, University of Technology, Aachen, Germany
4. Institute of Laboratory Animal Sciences, University Hospital, University of Technology, Aachen, Germany
5. Department of Neurosurgery, University Hospital, University of Technology, Aachen, Germany