1. From the Department of Neurology, Institute for Stroke and Cerebrovascular Diseases, The University of Texas Health Science Center, Houston (F.S.V., J.R.M.)
2. Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor (C.B.S.)
3. Department of Neurology, Duke University Medical Center, Durham, NC (P.Y.C.)
4. Department of Neurology, Case Western Reserve University, Cleveland, OH (C.R.-E.)
5. Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA (M.A.)
6. Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus (R.J.R.)
7. Department of Neurology, Yale School of Medicine, New Haven, CT (R.S.)
8. Department of Neurological Surgery, University of Wisconsin-Madison (S.M.W.)
9. Department of Neurology, Pritzker School of Medicine, University of Chicago, IL (S.P.)
10. Department of Neuroscience, Georgetown University Medical Center, Washington DC (B.S.B.)
11. Department of Neurology, University of Iowa Carver College of Medicine (H.P.A.)
12. Division of Pediatric Neurology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN (L.C.J.)
13. Neurovascular Imaging Research Core and UCLA Stroke Center, University of California, Los Angeles (D.S.L.)
14. Harborview Neurology, University of Washington, Seattle (D.T.)
15. Division of Clinical Research, National Institute of Neurological Diseases and Stroke, National Institutes of Health (L.S.J.)
16. Department of Neurology, New York Presbyterian and Columbia University Medical Center, New York, NY (R.S.M.)
17. Department of Neurology and Rehabilitation Medicine, University of Cincinnati, OH (D.K.).