1. Department of Radiology, Division of Diagnostic and Therapeutic Neuroradiology, St. Michael’s Hospital, University of Toronto, Ontario, Canada;
2. Neuroradiology & Neurointervention Service, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts;
3. Department of Neurosurgery and Neurointerventional Surgery, Louisiana State University, Shreveport, Louisiana;
4. Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, Massachusetts;
5. Interventional Neuroradiology Department, Erasmus University Hospital, Brussels, Belgium;
6. Diagnostic and Therapeutic Neuroradiology Department, Toulouse Hospital Center, Purpan Hospital, Toulouse, France;
7. Neurovascular Intervention, Careggi Hospital of Florence, Florence, Italy;
8. Neurosurgery & Interventional Neuroradiology, NewYork-Presbyterian Hospital, Weill Cornell School of Medicine, New York, New York;
9. Department of Interventional Neuroradiology, Sorbonne University, AP-HP, Pitié Salpêtrière - Charles Foix Hospital, Paris, France;
10. Department of Neurosurgery, Thomas Jefferson University, Philadelphia, Pennsylvania;
11. Department of diagnostic Radiology and Interventional Radiology, Vaudois Hospital Center of Lausanne, Lausanne, Switzerland;
12. Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany;
13. Endovascular Neurosurgery and Interventional Radiology Team, La Sagrada Familia Clinic, Buenos Aires, Argentina;
14. Neurosurgery Department, Orlando Health Neuroscience and Rehabilitation Institute, Orlando, Florida;
15. Department of Radiology, Subdivision of Interventional Neuroradiology, Clinical Hospital Center "Sisters of Mercy", Zagreb, Croatia;
16. Department of Neurosurgery, UTMB and Baylor School of Medicine, Houston, Texas;
17. Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona;
18. Department of Neurosurgery, State University of New York at Buffalo, Buffalo, New York;
19. Department of Neuroradiology, Mayo Clinic, Rochester, Minnesota;
20. Department of Radiology, Interventional Radiology and Neurointerventional Services, Austin Health, Melbourne, Australia;
21. Department of Neurosurgery, Geisinger, Wilkes-Barre, Pennsylvania;
22. Department of Neurosurgery, Geisinger, Danville, Pennsylvania;
23. Neuroradiology, ASST Great Metropolitan Hospital, Niguarda, Milan, Italy;
24. Department of Neurointerventional Radiology, UMass Memorial Hospital, Worcester, Massachusetts;
25. Neurovascular Intervention, San Raffaele Hospital, Milan, Italy;
26. Department of Neurosurgery, University of Miami, Florida;
27. Department of Neuroscience, Valley Baptist Neuroscience Institute, Harlingen, Texas;
28. Department of Neurosurgery, University of Alabama at Birmingham, Alabama;
29. Department of Diagnostic and Interventional Neuroradiology, University Hospital Basel, Switzerland;
30. Department of Clinical Neurological Sciences, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada;
31. Department of Medical Imaging, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada;
32. Department of Neurosurgery, University of Pennsylvania, Penn Medicine, Philadelphia, Pennsylvania;
33. Department of Neurologic Surgery, Mayo Clinic, Jacksonville, Florida;
34. Neurovascular Intervention, Niguarda Cà Granda Hospital, Milano, Italy;
35. Department of Neurosurgery, Christian Doppler University Hospital, Paracelsus Medical University, Salzburg, Austria; and
36. Institute of Neurointervention, Paracelsus Medical University, Salzburg, Austria