1 Interdisciplinary Division of Neuro-Oncology, Hertie Institute for Clinical Brain Research, Center for Neuro-Oncology, Comprehensive Cancer Center Tübingen Stuttgart, University Hospital Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany. ghazaleh.tabatabai@uni-tuebingen.de.
2 Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School Boston, Boston, MA 02114, USA. HWAKIMOTO@mgh.harvard.edu.