[1] Geffen Sch Med UCLA, Dept Neurol, 710 Westwood Plaza, Los Angeles, CA 90095 USA
[2] Alfried Krupp Hosp, Dept Neuroradiol & Intracranial Endovasc Therapy, Essen, Germany
[3] Toronto Western Hosp, Div Neuroradiol, JDMI, UHN, Toronto, ON, Canada
[4] Univ Texas Rio Grande Valley, Dept Neurol, Valley Baptist Med Ctr, Harlingen, TX USA
[5] Univ Pittsburgh, Med Ctr, Dept Neurol, Pittsburgh, PA USA
[6] Univ Pittsburgh, Med Ctr, Dept Neurosurg, Pittsburgh, PA USA
[7] Imperial Coll Healthcare NHS Trust London, Dept Neuroradiol, London, England
[8] Johanna Etienne Hosp, Dept Intervent Neuroradiol, Neuss, Germany
[9] Univ Med Ctr Hamburg Eppendorf, Dept Diagnost & Intervent Neuroradiol, Hamburg, Germany
[10] Rabin Med Ctr, Dept Neurol, Tel Aviv, Israel
[11] Rabin Med Ctr, Dept Intervent Neuroradiol, Tel Aviv, Israel
[12] WellStar Hlth Syst, Dept Neurol, Atlanta, GA USA
[13] WellStar Hlth Syst, Dept Neuroradiol, Atlanta, GA USA