1. From the Division of Cardiology (G.C.F.) and Department of Neurology (J.L.S.), University of California, Los Angeles; Department of Clinical Neurosciences, Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada (E.E.S.); Department of Epidemiology, Michigan State University, East Lansing, MI (M.J.R.); Division of Cardiology VA Boston Healthcare System, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA (D.L.B.); Duke Clinical Research Center, Durham, NC (M.V.G....