1. Department of Dermatology, University Medical Center Mainz, 55131 Mainz, Germany
2. Department of Neurosurgery, University Medical Center Mainz, 55131 Mainz, Germany
3. Laboratory of Experimental Neurooncology, University Medical Center Mainz, 55131 Mainz, Germany
4. Institute of Neuropathology, University Medical Center Mainz, 55131 Mainz, Germany
5. Research Center for Immunotherapy, University Medical Center Mainz, 55131 Mainz, Germany
6. Department of Neurosurgery, SHG-Klinikum Idar-Oberstein, 55743 Idar-Oberstein, Germany