1. Department of Neurosurgery, La Pitié-Salpétrière Hospital, Université Paris Sorbonne, Paris, France;
2. Departments of Pediatric Neurosurgery and
3. Departments of Neuroradiology and
4. Department of Neuroradiology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland; and
5. Pediatric Radiology, Necker Hospital for Sick Children, Université Paris Descartes, Paris, France;
6. Department of Neuroradiology, Sainte-Anne Hospital and Université Paris Descartes, INSERM UMR S894, Paris, France
7. Neurosurgery, Kremlin-Bicêtre Hospital, Le Kremlin-Bicêtre, France;