1. From the Department of Clinical Neurosciences (E.E.S.), Hotchkiss Brain Institute, University of Calgary, Calgary, Canada; Division of Cardiology (G.C.F.), University of California–Los Angeles, Los Angeles, CA; Department of Epidemiology (M.J.R.), Michigan State University, East Lansing, MI; Duke Clinical Research Institute (M.C., D.M.O., A.F.H.), Duke University, Durham, NC; and Department of Neurology (L.H.S.), Massachusetts General Hospital, Boston, MA.