1. From the Department of Neurosurgery (S.A.-H., C.J.S., X.D., L.R.-F., F.T.C.), University of Illinois at Chicago
2. Department of Neurology and Rehabilitation (D.K.P.), University of Illinois at Chicago
3. Departments of Neurology and Epidemiology, Columbia University, New York, NY (M.S.V.E.)
4. Departments of Neurosurgery and Neurology, Washington University in St Louis, MO (G.J.Z.)
5. Neurovascular Imaging and Research Core and Department of Neurology, University of California at Los Angeles (D.S.L.)
6. Division of Neurology, Department of Medicine, University of Toronto, Canada (F.L.S.)
7. Department of Neurology, University of Pennsylvania, Philadelphia (S.E.K.)
8. Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA (L.R.C.)
9. Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City (C.P.D.)
10. Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL (P.B.G.)
11. Population Health Research Institute affiliated with McMaster University Faculty of Health Sciences and Hamilton University Health Sciences, Ontario, Canada (P.B.G.)
12. Departments of Translational Science and Molecular Medicine, Michigan State University College of Human Medicine and Mercy Health Hauenstein Neurosciences, Grand Rapids, MI (P.B.G.).