[1] Res Ctr Juelich, Inst Neurosci & Med INM 3 INM 4, Julich, Germany
[2] Univ Cologne, Dept Neurol, Fac Med, Cologne, Germany
[3] Univ Aachen, Ctr Integrated Oncol CIO, Bonn, Germany
[4] Univ Aachen, Ctr Integrated Oncol CIO, Cologne, Germany
[5] Univ Aachen, Ctr Integrated Oncol CIO, Dusseldorf, Germany
[6] Univ Hlth Network, Wilkins Family Chair Brain Tumor Res, Princess Margaret Canc Ctr, Toronto, ON, Canada
[7] Univ Hlth Network, Wilkins Family Chair Brain Tumor Res, MacFeeters Hamilton Ctr Neurooncol Res, Toronto, ON, Canada
[8] Toronto Western Hosp, Div Neurosurg, Toronto, ON, Canada
[9] Krembil Brain Inst, Toronto, ON, Canada
[10] Univ Cologne, Fac Med, Dept Stereotaxy & Funct Neurosurg, Cologne, Germany
[11] Univ Cologne, Univ Hosp Cologne, Cologne, Germany
[12] Res Ctr Juelich, Inst Neurosci & Med INM 3, Leo Brandt St, D-52425 Julich, Germany