1. Department of Neurosurgery, University of Texas Health Science Center San Antonio, San Antonio, Texas, USA;
2. Medical University of South Carolina, Charleston, South Carolina, USA;
3. University Medical Center Göttingen, Göttingen, Germany;
4. University Hospital Basel, Basel, Switzerland;
5. Emory University, Atlanta, Georgia, USA;
6. Wake Forest University, Winston-Salem, North Carolina, USA;
7. University of Tennessee Health Science Center, Memphis, Tennessee, USA;
8. Bannner University of Arizona Medical Center, Tucson, Arizona, USA;
9. University of Texas Medical Branch, Galveston, Texas, USA;
10. Chonnam National University Hospital, Gwangju, South Korea;
11. Mount Sinai Health System, New York, New York, USA;
12. Washington University in St. Louis, St. Louis, Missouri, USA;
13. Department of Neuroradiology, School of Medicine, West Virginia University, Morgantown, West Virginia, USA;
14. Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA;
15. University of Virginia, Charlottesville, Virginia, USA;
16. Centro Endovascular Neurológico, Médica Uruguaya, Montevideo, Uruguay;
17. University of Washington, Seattle, Washington, USA;
18. University of Florida, Gainesville, Florida, USA;
19. Hyogo College of Medicine, Nishinomiya, Japan;
20. Yale School of Medicine, New Haven, Connecticut, USA;
21. Allegheny General Hospital, Pittsburgh, Pennsylvania, USA;
22. Centro Hospitalar Universitário de Lisboa Central, Lisboa, Portugal;
23. NorthShore University Health System, Evanston, Illinois, USA;
24. University of Miami Health System, Miami, Florida, USA;
25. University of Iowa, Iowa City, Iowa, USA;