From the Neuromuscular Unit, Neurology Department (R.F.-T., M.M., J.-J.P., J.-B.E., A.L.d.M.), and Department of Pathology (I.R.), Donostia Universitary Hospital, San Sebastian; Neurosciences Area (R.F.-T., M.Z., D.O., A.L.d.M.) and Oncology Area (M.G.-P., A.M.), Biodonostia Institute, San Sebastian; Center for Biomedical Research Network in Neurodegenerative Diseases (CIBERNED) (R.F.-T., A.L.d.M.), Institute Carlos III, Ministry of Economy and Competitiveness; Clinical Epidemiology Unit (J.-I.E.),...(2016-09-20時点)