1 From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (E.E.S.), University of Calgary, AB, Canada; and Department of Neurology (J.R.R.), Boston University School of Medicine, and Framingham Heart Study, MA. eesmith@ucalgary.ca.
2 From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (E.E.S.), University of Calgary, AB, Canada; and Department of Neurology (J.R.R.), Boston University School of Medicine, and Framingham Heart Study, MA.