1 Institute of Neuroscience and Medicine (INM-3, INM-4), Research Center Juelich, Juelich, Germany.
2 Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.
3 Center for Integrated Oncology (CIO), Universities of Aachen, Bonn, Cologne and Duesseldorf, Cologne, Germany.
4 Princess Margaret Cancer Center and MacFeeters-Hamilton Center for Neuro-Oncology Research, University Health Network, Wilkins Family Chair in Brain Tumor Research, Toronto, Canada.
5 Division of Neurosurgery, Toronto Western Hospital, Toronto, Canada.
6 Krembil Brain Institute, Toronto, Canada.
7 Department of Stereotaxy and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.