1. Division of Interventional Neuroradiology, Duke University Health System, Durham, North Carolina
2. Department of Neurological Surgery, Duke University Health System, Durham, North Carolina
3. Departments of Neurology and Neurological Surgery, Case Western Reserve University, and Case Medical Center, Cleveland, Ohio
4. Department of Interventional Neuroradiology, Case Western Reserve University, and Case Medical Center, Cleveland, Ohio
5. Department of Neurological Surgery, Case Western Reserve University, and Case Medical Center, Cleveland, Ohio
6. Department of Interventional Neuroradiology, Duke University Health System, Durham, North Carolina
7. Department of Interventional Vascular Radiology, Duke University Health System, Durham, North Carolina