1. Stanford Stroke Center, Palo Alto, CA (P.S., G.W.A.).
2. Neurology Department, Rothschild Foundation Hospital, Paris, France (P.S.).
3. Institut de Psychiatrie et Neurosciences de Paris, U1266, INSERM, France (P.S.).
4. Department of Neurology, University Hospitals Leuven, Belgium (A.W., R.L.).
5. Interventional Neuroradiology Department, Rothschild Foundation Hospital, Paris, France (W.B., B.M., M.M.).
6. Service de Neurologie et Neurovasculaire, Hôpital Saint-Joseph, Paris, France (B.M.).
7. Université Paris-Cité, FHU Neurovasc, INSERM 1144, France (B.M., M.M.).
8. CHRU-Nancy, Department of Neuroradiology, Université de Lorraine, France (B. Gory).
9. Radiology Department, Stanford University, Palo Alto, CA (J.J.H., G.Z.).
10. Radiology Department, Toulouse University Hospital, France (C.C.).
11. Neurology Department, Lariboisière Hospital, APHP Nord, Paris, France (M.M.).
12. Department of Anesthesiology, Perioperative and Pain Medicine, Stanford School of Medicine, CA (B. Gaudilliere).
13. Department of Neurology, Johns Hopkins University, Baltimore, MD (R.L.).
14. Acute Stroke Unit, Hôpital Pierre-Paul Riquet, CHU Toulouse and CIC 1436, Toulouse University, France (J.-M.O.).