1. From the Department of Diagnostic and Therapeutic Neuroradiology, INSERM U1254 (F.Z., S.B., B.G.), University Hospital of Nancy, France
2. Department of Biostatistics, EA 2694–Santé Publique: Epidémiologie et Qualité des Soins, CHRU Lille, France (J.L.)
3. Department of Neurology, Emory University/Grady Memorial Hospital, Atlanta, GA (D.C.H.)
4. Department of Interventional Neuroradiology, Paris, France (M.P., M.M.)
5. Department of Neurology, Rigshospitalet, Copenhagen, Denmark (H.S.-A.)
6. Department of Neuroradiology, Medical Center-University of Freiburg, Germany (C.A.T.)
7. Diagnostic and Interventional Neuroradiology, Hospital Bremen-Mitte/Bremen-Ost, Deutschland (P.P.)
8. Department of Neurology, Stroke Center, Foch Hospital, Suresnes, France (B.L.)
9. Department of Neuroradiology, University Hospital of Munich, Germany (F.D.)
10. Department of Neuroradiology, University Hospital of Toulouse, France (C.C.)
11. Department of Neuroradiology, Paracelsus Medical University Salzburg, Austria (M.K.)
12. Department of Neuroradiology, University Medical Center Göttingen, Germany (M.P.)
13. Department of Neurosurgery, Medical University of South Carolina, Charleston (A.M.S.)
14. Department of Interventional Neuroradiology, Hospices Civils de Lyon, France (F.T.).
15. Stroke Unit, CIC-P 1433, INSERM U1116, Department of Neurology (S.R.), University Hospital of Nancy, France