[1] Univ Gothenburg, Sahlgrenska Acad, Dept Neurochem & Psychiat, Inst Neurosci & Physiol,Clin Neurochem Lab, Molndal, Sweden
[2] Lund Univ, Clin Memory Res Unit, Lund, Sweden
[3] Karolinska Univ Hosp, Stockholm, Sweden
[4] Univ Perugia, Clin Neurol, I-06100 Perugia, Italy
[5] Univ Eastern Finland, Clin Res Ctr Mediteknia, Dept Neurol, Kuopio, Finland
[6] Univ Eastern Finland, Clin Res Ctr Mediteknia, Brain Res Unit, Kuopio, Finland
[7] Vrije Univ Amsterdam Med Ctr, Dept Neurol, Amsterdam, Netherlands
[8] Vrije Univ Amsterdam Med Ctr, Alzheimer Ctr, Amsterdam, Netherlands
[9] Goethe Univ Frankfurt, Dept Psychiat Psychosomat Med & Psychotherapy, Frankfurt, Germany
[10] Univ Calif San Francisco, Ctr Neuroimaging Neurodegenerat Dis, Dept Radiol, San Francisco, CA 94143 USA
[11] Univ Calif San Francisco, Ctr Neuroimaging Neurodegenerat Dis, VA Med Ctr, San Francisco, CA 94143 USA
[12] NYU, Sch Med, Ctr Brain Hlth, New York, NY USA
[13] Linkoping Univ, Div Geriatr Med, Dept Clin & Expt Med, Linkoping, Sweden
[14] Heidelberg Univ, Sekt Gerontopsychiat, Heidelberg, Germany
[15] Radboud Univ Nijmegen Med Ctr, Alzheimer Ctr Nijmegen, Donders Inst Brain Cognit & Behav, Dept Neurol, Nijmegen, Netherlands
[16] Radboud Univ Nijmegen Med Ctr, Alzheimer Ctr Nijmegen, Donders Inst Brain Cognit & Behav, Lab Med, Nijmegen, Netherlands
[17] Aristotle Univ Thessaloniki, G Papanicolaou Gen Hosp, Dept Neurol 3, Memory & Dementia Ctr, GR-54006 Thessaloniki, Greece
[18] Univ Maastricht, Inst Brain & Behav, Dept Psychiat & Neuropsychol, Maastricht, Netherlands
[19] Kings Coll London, Wolfson Ctr Age Related Dis, London WC2R 2LS, England
[20] Stavanger Univ Hosp, Ctr Age Related Med, Stavanger, Norway