1 Department of Neurosurgery, State University of New York at Stony Brook, Stony Brook, New York, USA.
2 Mt Sinai Hospital, NYC, New York, USA.
3 University of Tennessee, Semmes-Murphey Neurologic and Spine Clinic, Memphis, Tennessee, USA.
4 New York-Presbyterian Hospital, New York, USA.
5 Division of Neurological Surgery, Barrow Neurological Institute, Phoenix, Arizona, USA.
6 Department of Interventional Neuroradiology, Radiology Imaging Associates, Englewood, Colorado, USA.
7 Department of Neurosciences, Medical University of South Carolina, Mount Pleasant, South Carolina, USA.
8 Medical University of South Carolina, Charleston, South Carolina, USA.
9 Departments of Neurosurgery and Radiology and Toshiba Stroke Research Center, University at Buffalo, State University of New York, Buffalo, New York, USA.
10 Department of Neurosurgery, University of Southern California, Los Angeles, California, USA.
11 Department of Neurology, University of Tennessee, Memphis, Tennessee, USA.
12 NeuroEndovascular Program, Massachusetts General Hospital, Boston, Massachusetts, USA.
13 Department of Radiology, University Hospitals Case Medical Center, Ohio, Ohio, USA.