[1] Amsterdam UMC, Locat VUmc, Dept Neurosurg, Amsterdam, Netherlands
[2] Canc Ctr Amsterdam, Brain Tumor Ctr, Amsterdam, Netherlands
[3] Amsterdam UMC, Locat VUmc, Dept Pathol, Amsterdam, Netherlands
[4] Univ Med Ctr Utrecht, Dept Pathol, Princess Maxima Ctr Pediat Oncol, Utrecht, Netherlands
[5] Amsterdam UMC, Locat VUmc, Dept Neurol, Amsterdam, Netherlands