1. Centre Hospitalier Universitaire de Nantes, Nantes Cedex, France
2. University of Calgary, Calgary, Alberta, Canada
3. University of California, Los Angeles Medical Center, Los Angeles
4. University of Glasgow, Glasgow, Scotland
5. State University of New York at Buffalo
6. Erasmus MC, University Medical Center, Rotterdam, the Netherlands
7. Academic Medical Center Amsterdam, Amsterdam, the Netherlands
8. Maastricht University Medical Center, Maastricht, the Netherlands
9. University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
10. The Royal Melbourne Hospital, Victoria, Australia
11. University Hospital of Montpellier, Montpellier, France
12. The Florey Institute of Neuroscience and Mental Health, Parkville, Australia
13. Division of Neurosurgery, Department of Surgery, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
14. University Hospital of Poitiers, Poitiers, France
15. Department Radiology, MC Haaglanden, Leidschendam, the Netherlands
16. Hopital Saint Anne, University Paris-Descartes, Paris, France
17. Department of Neuroradiology, Royal Victoria Hospital, Belfast, Belfast, Ireland
18. Altair Biostatistics, Mooresville, North Carolina
19. Centre Hospitalier Universitaire Clermont-Ferrand, Clermont-Ferrand, France
20. University of Toronto, Toronto Western Hospital, Toronto, Ontario, Canada
21. Abington and Jefferson Health, Abington, Pennsylvania
22. University of Duisburg-Essen, Duisburg-Essen, Germany
23. Oxford University Hospitals National Health Services Foundation trust and University of Oxford, Oxford, England
24. Hospital Vall d'Hebron, Barcelona, Spain
25. Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, England
26. Department of Clinical Neuroscience, Central Clinical School, Monash University and The Alfred Hospital, Melbourne, Australia
27. Hospital Clinic of Barcelona, Barcelona, Spain
28. Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain
29. University of Lorraine, and University Hospital of Nancy, Nancy, France