1. Department of Neurosurgery, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
2. Université Paris 6 - Pierre et Marie Curie, Paris, France
3. CRICM INSERM U1127 CNRS UMR 7225, Institut du Cerveau et de la Moelle Epinière, Paris, France
4. Inserm U944, CNRS U7212, Université Paris VII, Institut Universitaire d'Hématologie, Paris, France
5. Department of Neurosurgery, AP-HP, Hôpital Beaujon, Clichy, France
6. Department of Neuropathology, Otto-von-Guericke Universität, Magdeburg, Germany
7. Department of Head and Neck Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA