1. From the Department of Neurology, Medical University of South Carolina, Charleston (A.M.W., T.N.T., M.I.C.)
2. Department of Neurology, Ralph H Johnson VA Medical Center, Charleston, SC (A.M.W.).
3. Departments of Radiology, Neurology and Neurosurgery, University of Iowa Hospitals and Clinics (C.P.D.)
4. Department of Neurosurgery, State University of New York, Stony Brook (D.J.F.)
5. Department of Biostatistics and Bioinformatics, Emory University Rollins School of Public Health, Atlanta, GA (M.J.L., G.A.C.)
6. Department of Neurology, University of California Los Angeles (D.S.L.)
7. Department of Neurology, Barrow Neurological Institute, Phoenix, AZ (M.F.W.)
8. Department of Neurology, Oregon Health and Science University, Portland (H.L.)
9. Neurology Department, Stroke Unit, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain (E.L.-C.)
10. Department of Public Health, Emory University, Atlanta, GA (J.M.)
11. Division of Clinical Research, National Institute of Neurological Disorders and Stroke, Bethesda, MD (L.S.J.)
12. Piedmont Research Institute, Piedmont Healthcare, Atlanta, GA (B.L.)