1 From the Inserm U1171, Degenerative and Vascular Cognitive Disorders, Université de Lille, CHU Lille, France (C.C.).
2 Department of Clinical Neurosciences, Radiology and Community Health Sciences, Hotchkiss Brain Institute, University of Calgary, AB, Canada (S.B.C.).
3 Department of Neurology, University of Virginia School of Medicine, Charlottesville, VA (K.C.J.).
4 J. Philip Kistler Stroke Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA (N.S.R.).