1. Department of Neurosurgery, Hannover Medical School, Hannover, Germany
2. Department of Neurosurgery, Brandenburg Medical School, Helios Medical Center, Bad Saarow, Germany
3. Department of Radiation Oncology, Hannover Medical School, Hannover, Germany
4. Institute of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
5. Department for Neuropathology, Institute for Pathology, Hannover Medical School, Hannover, Germany