Acknowledgements
U.S. was supported by the Deutsche Forschungsgemeinschaft and the Fördergemeinschaft Kinderkrebszentrum Hamburg. This work was supported by grants 70112697 and 70114478 from Deutsche Krebshilfe.
Part of this work was a poster presentation at the 2019 Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN) in Magdeburg