1. Department of NeuropathologyUniversity Hospital EppendorfMartinstr. 5220246HamburgGermany
2. Department of NeurologyThe Johns Hopkins School of Medicine and Kennedy‐Krieger Research InstituteBaltimoreMDUSA
3. Department of NeurosurgeryLaboratory for Brain Tumor BiologyUniversity Hospital EppendorfHamburgGermany
4. Department of Radiation OncologyLong Island Jewish Medical CenterThe Long Island Campus for the Albert Einstein College of MedicineNew Hyde ParkNYUSA