1. Department of Neurology; Massachusetts General Hospital; Boston MA
2. Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology; Massachusetts General Hospital; Charlestown MA
3. Department of Neurology; Cedars-Sinai Medical Center; Los Angeles CA
4. Acute Cerebrovascular Diagnostics Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health; Bethesda MD
5. Department of Neurology; Washington University School of Medicine; St Louis MO
6. Comprehensive Stroke Center; MedStar Washington Hospital Center; Washington DC
7. Massachusetts General Hospital Biostatistics Center; Boston MA
8. Harvard T. H. Chan School of Public Health; Boston MA
9. Neuroendovascular Service, Texas Stroke Institute; Plano TX
10. Department of Radiology; Massachusetts General Hospital; Boston MA
11. Department of Neuroradiology; Paris Descartes University, Saint Anne Hospital Center; Paris France
12. Dell Medical School; University of Texas at Austin; Austin TX