1. Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
2. Institute of Neuroscience and Medicine (INM-3, -4), Research Center Juelich , Juelich , Germany
3. Center of Integrated Oncology (CIO), Universities of Aachen, Bonn , Cologne, and Düsseldorf , Germany
4. German Cancer Consortium (DKTK), Partner Site Munich, German Cancer Research Center (DKFZ) , Heidelberg , Germany
5. Department of Nuclear Medicine, University Hospital of Munich (LMU) , Munich , Germany
6. Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
7. Department of Radiology and Biomedical Imaging, University of California , San Francisco, San Francisco, California , USA
8. Department of Nuclear Medicine, University Hospital RWTH Aachen , Aachen , Germany
9. Department of Neurosurgery, University Hospital of Munich (LMU) , Munich , Germany