1. From the Department of Interventional Neuroradiology (K.P., E.S., B.B., F.D.M., S.P., N.S., F.C.), Department of Neuro-Intensive Care (O.C., V.D.), and Department of Vascular Neurology (G.F.P., F.B., R.L., C.P., Y.S.), Pitié-Salpêtrière Hospital, Paris, France; Sorbonne Universités, UPMC University Paris-06, France (E.S., F.B., R.L., S.A., V.D., F.C.); and Department of Vascular Neurology, Saint-Antoine Hospital, Paris, France (M.Y., S.A.).