1. Institute of Neurology (Edinger Institute); Goethe University; Frankfurt Germany
2. Division of Molecular Genetics; German Cancer Research Center; Heidelberg Germany
3. Institute of Neuropathology; University of Heidelberg; Heidelberg Germany
4. Clinical Cooperation Unit Neuropathology; German Cancer Research Center (DKFZ); Heidelberg Germany
5. Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus; Frankfurt Germany
6. Karolinska Institute, Department of Biosciences and Nutrition; Huddinge Sweden
7. Experimental Neurosurgery, Center for Neurology and Neurosurgery; Goethe University Hospital Frankfurt; Frankfurt Germany
8. Institute of Pathology; University Hospital of Erlangen; Erlangen Germany
9. International Agency for Research on Cancer; Lyon France