1. Stanford Stroke Center; Stanford University School of Medicine; Stanford CA
2. Departments of Radiology and Clinical Neurosciences; University of Calgary; Calgary Alberta Canada
3. Division of Interventional Neuroradiology; University of California, Los Angeles; Los Angeles CA
4. Department of Neuroradiology; Gui de Chauliac Hospital; Montpellier France
5. Department of Neurology; Duisburg-Essen University Hospital; Essen Germany
6. Department of Neurosurgery; State University of New York at Buffalo; Buffalo NY
7. Division of Neuroradiology and Division of Neurosurgery, Department of Medical Imaging and Department of Surgery, Toronto Western Hospital; University Health Network, University of Toronto; Toronto Ontario Canada
8. Department of Diagnostic and Therapeutic Neuroradiology; University Hospital of Toulouse; Toulouse France
9. Saint Luke's Mid America Heart Institute and University of Missouri-Kansas City School of Medicine; Kansas City MO
10. Department of Neurology; University of Heidelberg; Heidelberg Germany
11. Department of Radiology and Neuroradiology; Christian Albrechts University of Kiel; Kiel Germany
12. Department of Neurology; University of Pittsburgh Medical Center; Pittsburgh PA
13. Department of Neurology; Inselspital, University of Bern; Bern Switzerland
14. Marcus Stroke and Neuroscience Center, Grady Memorial Hospital, Department of Neurology; Emory University School of Medicine; Atlanta GA
15. Department of Neurosurgery, Toshiba Stroke and Vascular Research Center; State University of New York at Buffalo; Buffalo NY
16. Department of Neurology and Neurosurgery; University of Miami Miller School of Medicine/Jackson Memorial Hospital; Miami FL
17. Department of Radiology; Erlanger Hospital at University of Tennessee; Chattanooga TN
18. Division of Neurology; Erlanger Hospital at University of Tennessee; Chattanooga TN
19. Department of Neurosurgery; Rush University Medical Center; Chicago IL
20. Institute of Neuroradiology; Goethe University Hospital; Frankfurt Germany
21. Department of Neurology; Goethe University Hospital; Frankfurt Germany
22. Department of Neurology and Comprehensive Stroke Center; David Geffen School of Medicine at the University of California, Los Angeles; Los Angeles CA