1. Institut National de la Santé et de la Recherche Médicale; UMR U978; Bobigny France
2. Université Paris-13; PRES Sorbonne Paris-Cité; Bobigny France
3. UMR 168 CNRS; Institut Curie; Paris France
4. Institute of Neuropathology; University Hospital Münster; Münster Germany
5. Department of Neurosurgery; Ghent University Hospital; Ghent Belgium
6. Department of Pathology; Ghent University Hospital; Ghent Belgium
7. AP-HP; Service d'Anatomie et Cytologie Pathologiques; Hôpital Lariboisière; Paris France