1 Department of Neurology (M.P., E.W., P.S.), Karolinska University Hospital; Department of Clinical Neuroscience (M.P., T.G., E.W., P.S.), Karolinska Institutet; Department of Neuroradiology (T.G.), Karolinska University Hospital; Department of Molecular Medicine and Surgery (K.L.-R.), Karolinska Institutet; Department of Clinical Genetics (K.L.-R.); Medical Radiation Physics and Nuclear Medicine (S.P., L.N.), Karolinska University Hospital; and Division of Clinical Geriatrics (L.N.), Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.