1. Department of Pathology-Neuro-oncology, Sainte-Anne Hospital and Faculté Cochin Port-Royal, University Paris V, Paris, France
2. Department of Pathology-Neuro-oncology, Sainte-Anne Hospital and Faculté Cochin Port-Royal, University Paris V, Paris, France, and Department of Neurosurgery, Brigham and Women's Hospital, Children's Hospital, Harvard Medical School, Boston, Massachusetts
3. Department of Neurosurgery, Sainte-Anne Hospital and Faculté Cochin Port-Royal, University Paris V, Paris, France
4. Department of Neuropathology, Sainte-Anne Hospital and Faculté Cochin Port-Royal, University Paris V, Paris, France
5. Department of Neuropharmacology, Institut National de la Santé et de la Recherche Médicale, Unite 114, College de France, Paris, France