1. Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Calgary Stroke Program, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Canada (J.F., J.M.O., M.G.).
2. Stroke Center and Department of Neurology, University Hospital Basel and University of Basel, Switzerland (J.F.).
3. Department of Neurology, University of Manitoba, Winnipeg, Canada (N.S.).
4. Department of Neurology and Comprehensive Stroke Center, David Geffen School of Medicine, University of California, Los Angeles (J.L.S.).
5. Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA (M.F.).