1. From the Department of Neuroscience and Neurology (A.I., S.H.) and A.I. Virtanen Institute (R.P.), Kuopio University; and Department of Pathology (A.I.), Division of Diagnostic Services, Chromosome and DNA Laboratory (H.S., M.A.), and Department of Neurology (S.H.), Kuopio University Hospital, Kuopio, Finland.