Treatment of children under 4 years of age with medulloblastoma and ependymoma in the HIT2000/HIT-REZ 2005 trials: Neuropsychological outcome 5 years after treatment. oleh Holger Ottensmeier, Paul G Schlegel, Matthias Eyrich, Johannes E Wolff, Björn-Ole Juhnke, Katja von Hoff, Stefanie Frahsek, Rene Schmidt, Andreas Faldum, Gudrun Fleischhack, Andre von Bueren, Carsten Friedrich, Anika Resch, Monika Warmuth-Metz, Jürgen Krauss, Rolf D Kortmann, Udo Bode, Joachim Kühl, Stefan Rutkowski