[1] IRCCS San Giovanni, DioFBF, Lab Epidemiol & Neuroimaging, Via Pilastroni 4, I-25125 Brescia, Italy
[2] Vrije Univ Amsterdam, Med Ctr, Dept Cognit Neurol, Alzheimer Ctr, Amsterdam, Netherlands
[3] Univ Genoa, Dept Internal Med, Div Clin Neurophysiol, I-16126 Genoa, Italy
[4] UCL, Dept Clin Neurol, Inst Neurol, Dementia Res Grp, London, England
[5] Ctr Hosp Univ Nice, Hop Louis Pasteur, Ctr Memoire, Unite Evaluat Cognit, F-06108 Nice 2, France
[6] Kuopio Univ Hosp, Dept Neurol, SF-70210 Kuopio, Finland
[7] Huddinge Univ Hosp, Karolinska Inst, Dept Clin Neurosci, NEUROTEC, S-14186 Huddinge, Sweden
[8] Copenhagen Univ Hosp, Dept Neurol, Copenhagen, Denmark
[9] Univ Liege, Dept Neurol, Liege, Belgium
[10] Univ Liege, Cyclotron Res Ctr, Liege, Belgium