1. From the Department of Neuroradiology, Division of Interventional Neuroradiology, Department of Neurosurgery, San Raffaele University Hospital, Milan, Italy (P.P.)
2. Department of Diagnostic and Therapeutic Neuroradiology, INSERM U12542, University Hospital of Nancy, France (B.G., S.B., R.A.)
3. Department of Neuroradiology, University of Lorraine, IADI, INSERM U1254, Nancy, F-54000, France (Y.X., G.H.)
4. Department of Diagnostic and Interventional Neuroradiology, Foch Hospital, Suresnes, France (A.C.)
5. Department of Interventional Neuroradiology, Rothschild Foundation, Paris, France (J.-P.D., M.M., M.P., R.B.)
6. Department of Biostatistics, EA2694-Santé publique: épidémiologie et qualité des soins, Lille University, France (J.L.)
7. Department of Interventional Neuroradiology, Hospices Civils de Lyon, France (F.T., O.F.E.)
8. Department of Neurology, Stroke Unit, INSERM U1116, University Hospital of Nancy, France (S.R.)
9. Department of Neurology, Foch Hospital, Versailles Saint-Quentin en Yvelines University, Suresnes, France (B.L.).