[1] Fdn Maria Wolff, Madrid 28002, Spain
[2] CEP Hermanos Sangro, Consulta Neurol, Madrid, Spain
[3] Hosp Gen Gregorio Maranon, Serv Neurol, Madrid, Spain
[4] Hosp Gen Gregorio Maranon, Serv Geriatria, Madrid, Spain
[5] NYU, Sch Med, Med Ctr, Silberstein Aging & Dementia Res Ctr, New York, NY USA
[6] Hosp del Mar, Serv Neurol, Barcelona, Spain
[7] Hosp Severo Ochoa, Serv Neurol, Leganes, Spain
[8] Hosp Ramon & Cajal, Unidad Geriatria, E-28034 Madrid, Spain
[9] CEP Vicente Soldevilla, Consulta Neurol, Madrid, Spain
[10] Hosp Gomez Ulla, Serv Neurol, Madrid, Spain
[11] Hosp Gomez Ulla, Serv Psiquiatria, Madrid, Spain
[12] Hosp La Paz, Serv Neurol, Madrid, Spain
[13] CEP Moratalaz, Consulta Neurol, Madrid, Spain
[14] Hosp Princesa, Serv Neurol, Madrid, Spain