1. Department of Radiology, Mayo Clinic, Rochester, Minnesota;
2. Koru Hospital and Bayindir Hospitals, Ankara, Turkey; and
3. Department of Neurosurgery, Cerebrovascular Center, Stony Brook University Medical Center, Stony Brook;
4. Stroke and Cerebrovascular Surgery, Lyerly Neurosurgery/Baptist Neurological Institute, Jacksonville, Florida;
5. Department of Neurosurgery, Thomas Jefferson University, Philadelphia, Pennsylvania;
6. Department of Neurological Surgery, Rush University Medical Center, Chicago, Illinois;
7. Department of Neurosurgery, ENERI-Clinica La Sagrada Familia, Buenos Aires, Argentina
8. Department of Endovascular Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona;
9. Department of Neurosurgery, University at Buffalo Neurosurgery, Buffalo, New York;