[1] Charite, Dept Pediat Oncol & Hematol, Berlin, Germany
[2] Univ Med Ctr Hamburg Eppendorf, Dept Pediat Hematol & Oncol, Hamburg, Germany
[3] Univ Childrens Hosp, Dept Oncol, Zurich, Switzerland
[4] Med Univ Graz, Div Pediat Hematol & Oncol, Dept Pediat & Adolescent Med, Graz, Austria
[5] Univ Hosp Wurzburg, Inst Diagnost & Intervent Neuroradiol, Wurzburg, Germany
[6] Univ Klinikum Essen, Westdeutsch Protonentherapiezentrum Essen WPE, German Canc Consortium DKTK, Westdeutsch Tumorzentrum WTZ,Klin Partikeltherapi, Essen, Germany
[7] Univ Klinikum Munster, Inst Biometrie & Klin Forsch, Munster, Germany
[8] Univ Med Ctr Hamburg Eppendorf, Inst Neuropathol, Hamburg, Germany
[9] Res Inst Childrens Canc Ctr, Hamburg, Germany
[10] Hopp Childrens Canc Ctr Heidelberg KiTZ, Heidelberg, Germany
[11] German Canc Res Ctr, Div Pediat Neurooncol, Heidelberg, Germany
[12] Heidelberg Univ Hosp, Dept Pediat Oncol Hematol & Immunol, Heidelberg, Germany
[13] Princess Maxima Ctr Pediat Oncol, Utrecht, Netherlands
[14] Univ Bonn, Brain Tumor Reference Ctr, Inst Neuropathol, German Soc Neuropathol & Neuroanat DGNN, Bonn, Germany
[15] Univ Leipzig, Dept Radiat Oncol, Leipzig, Germany