[1] Med Univ Vienna, Dept Med 1, Div Oncol, Vienna, Austria
[2] Med Univ Vienna, Dept Neurosurg, Vienna, Austria
[3] Med Univ Vienna, Dept Radiat Oncol, Vienna, Austria
[4] Heidelberg Univ, Inst Pathol, Dept Neuropathol, Heidelberg, Germany
[5] German Canc Res Ctr, German Consortium Translat Canc Res DKTK, Clin Cooperat Unit Neuropathol, Heidelberg, Germany
[6] Med Univ Vienna, Dept Neurol, Div Neuropathol & Neurochem, Vienna, Austria