[1] Univ Extremadura, Univ Inst Mol Pathol Biomarker, ARADyAL Inst Salud Carlos III, Caceres, Spain
[2] Sect Neurol, Ronda Sur 10,E28500 Argamda Rey Madrid, Madrid 28030, Spain
[3] Fundacio Recerca Biomed, Social Mutua Terrassa, Barcelona, Spain
[4] Hosp Univ Mutua Terrassa, Dept Neurol, Movement Disorders Unit, Barcelona, Spain
[5] Univ Complutense, Hosp Doce Octubre, Dept Med, Serv Neurol, Madrid, Spain
[6] Inst Salud Carlos III, Ctr Invest Biomed Red Enfermedades Neurodegenerat, CIBERNED, Madrid, Spain
[7] Hosp Univ Salamanca, Dept Neurol, Salamanca, Spain
[8] Univ Alcala, Hosp Principe Asturias, Dept Med Neurol, C Marroquina 14,3o B, Madrid 28030, Spain