[1] Univ Wurzburg, Univ Childrens Hosp, Dept Pediat Hematol Oncol & Stem Cell Transplanta, Josef Schneiderstr 2, D-97080 Wurzburg, Germany
[2] Univ Wurzburg, Univ Hosp, Dept Neuroradiol, Wurzburg, Germany
[3] Univ Wurzburg, Comprehens Canc Ctr Mainfranken, Med Ctr, Wurzburg, Germany
[4] Univ Wurzburg, Univ Childrens Hosp, Dept Pediat Neurosurg, Wurzburg, Germany
[5] Univ Hosp Heidelberg, Dept Neuropathol, Heidelberg, Germany
[6] German Canc Res Ctr, Clin Cooperat Unit Neuropathol, German Canc Consortium DKTK, Heidelberg, Germany
[7] Hopp Childrens Canc Ctr KiTZ, Heidelberg, Germany
[8] German Canc Res Ctr, Heidelberg, Germany
[9] German Canc Res Ctr, Div Pediat Neurooncol, German Canc Consortium DKTK, Heidelberg, Germany
[10] Univ Gottingen, Univ Med Ctr Gottingen, Div Pediat Hematol & Oncol, Gottingen, Germany
[11] Univ Wurzburg, Bavarian Canc Res Ctr BZKF, Wurzburg, Germany
[12] Semmelweis Univ, Budapest, Hungary