1. Section of Molecular Pathology, International Agency for Research on Cancer; F-69372 Lyon France
2. Department of Neurological Surgery; Nihon University School of Medicine; Tokyo Japan
3. Department of Neurosurgery; Osaka Medical College; Takatsuki Japan
4. Department of Neuropathology, Institute of Pathology; University of Heidelberg, and CCU Neuropathology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ); 69120 Heidelberg Germany
5. Department of Neurosurgery; University Hospital Essen; Essen Germany
6. Bordeaux Institute of Neuroscience, CNRS UMR 5293; F-33076 Bordeaux France
7. Institute of Neuropathology, University Hospital Munster; D-48149 Munster Germany
8. Institute of Neurology (Edinger Institute), Goethe-University; Frankfurt/Main Germany
9. Department of Radiology, Oncology and Anatomic Pathology; Sapienza University of Rome; I-00161 Rome Italy
10. Medical Faculty; University of Zurich, CH-8091 Zurich; Switzerland
11. IRCCS Neuromed; I-86077 Pozzilli Italy