[1] Univ Florence, Dept Neurol & Psychiat Sci, I-50134 Florence, Italy
[2] Charles Univ Prague, Dept Neurol, Memory Disorders Clin, Fac Med 2, Prague, Czech Republic
[3] Univ Hosp Motol, Prague, Czech Republic
[4] Univ Helsinki, Cent Hosp, Dept Neurol, Helsinki, Finland
[5] Univ Helsinki, Dept Neurol Sci, Helsinki, Finland
[6] Akershus Univ Hosp, Dept Neurol, Lorenskog, Norway
[7] Univ Oslo, Fac Div Akershus Univ Hosp, Oslo, Norway
[8] Catholic Univ, Policlin Gemelli, Neuropsychol Serv, Rome, Italy
[9] Istanbul Univ, Behav Neurol & Movement Disorders Unit, Dept Neurol, Istanbul Fac Med, Istanbul, Turkey
[10] Univ Lille Nord France, UDSL, Lille, France
[11] Carol Davila Univ Med & Pharm, Sch Med, Univ Hosp, Dept Neurol, Bucharest, Romania
[12] Masaryk Univ, St Annes Hosp, Fac Med, Dept Neurol 1, Brno, Czech Republic
[13] Masaryk Univ, Appl Neurosci Res Grp, Brno, Czech Republic
[14] Polish Acad Sci, Med Res Ctr, Dept Neurodegenerat Disorders, Warsaw, Poland
[15] Karolinska Inst, Dept Neurobiol Care Sci & Soc, Stockholm, Sweden
[16] Thomayer Teaching Hosp, Dept Neurol, Prague, Czech Republic
[17] Inst Postgrad Educ Med, Prague, Czech Republic
[18] UCL, UCL Inst Neurol, Dept Neurodegenerat, Dementia Res Ctr, London, England
[19] Med Univ Graz, Dept Neurol, Graz, Austria
[20] Univ Belgrade, Sch Med, Inst Neurol, Belgrade, Serbia
[21] Vrije Univ Amsterdam, Med Ctr, Dept Neurol, Amsterdam, Netherlands
[22] Vrije Univ Amsterdam, Med Ctr, Alzheimer Ctr, Amsterdam, Netherlands