1. From the Departments of Neurology and Neurosurgery (D.P., M.-J.D., J.A.S., R.L., R. Sakalla, R.R., X.A.-C., R.M., C.H.C., A.-L.L., R.L.P., B.B.) and Pathology (J.A.S.), Montreal Neurological Hospital and Institute, McGill Genome Centre, Department of Human Genetics (S.J.R., J.R.), and the Departments of Diagnostic Radiology (R.L.P.) and Human Genetics (K.C., R.R., X.A.-C., B.B.), McGill University, Montreal Heart Institute (S.P., M.-P.D.), the Departments of Neurosciences (M.T., A.D.) and Medicine (M.P.D...