[1] Hosp Univ La Fe, Serv Neurol, Valencia 46009, Spain
[2] Ctr Invest Biomed Red Enfermedades Neurodegenerat, Lab Expt Neurol, Valencia, Spain
[3] Hosp Sagunto, Neurol Sect, Valencia, Spain
[4] Hosp Sagunto, Serv Pathol, Valencia, Spain
[5] Univ Penn, Dept Neurol, Philadelphia, PA 19104 USA