From Sorbonne Universités (C.A., P.B.), Université Pierre et Marie Curie; Brain and Spine Institute (C.A., P.B.), INSERM U1127, CNRS 7225, Paris; Department of Neurosurgery (C.A., P.B.), Hospices Civils de Lyon, Hospital for Neurology and Neurosurgery Pierre Wertheimer; and Université de Lyon (P.B.), Université Claude Bernard, France.