[1] Skane Univ Hosp, Dept Neurol, Lund, Sweden
[2] Skane Univ Hosp, Memory Clin, Malmo, Sweden
[3] Biogen, Boston, MA USA
[4] Washington Univ, Sch Med, Dept Neurol, St Louis, MO 63110 USA
[5] Vrije Univ Amsterdam Med Ctr, Amsterdam, Netherlands
[6] UK Dementia Res Inst, London, England
[7] UCL Inst Neurol, Dept Mol Neurosci, London, England
[8] Sahlgrens Univ Hosp, Clin Neurochem Lab, Molndal, Sweden
[9] Univ Gothenburg, Sahlgrenska Acad, Dept Psychiat & Neurochem, Molndal, Sweden
[10] ADx NeuroSci, Ghent, Belgium
[11] Pasqual Maragall Fdn, BarcelonaBeta Brain Res Ctr, Barcelona, Spain
[12] Univ Penn, Dept Pathol & Lab Med, Perelman Sch Med, Philadelphia, PA USA
[13] Fujirebio Europe NV, Ghent, Belgium
[14] Radboud Univ Nijmegen, Med Ctr, Donders Inst Brain Cognit & Behav, Dept Neurol, Nijmegen, Netherlands
[15] Radboud Univ Nijmegen, Med Ctr, Donders Inst Brain Cognit & Behav, Dept Lab Med, Nijmegen, Netherlands
[16] Merck & Co Inc, West Point, PA USA
[17] Univ Klinikum Erlangen, Dept Psychiat & Psychotherapy, Erlangen, Germany
[18] Friedrich Alexander Univ Erlangen Nurnberg, Erlangen, Germany
[19] Med Univ Bialystok, Dept Neurodegenerat Diagnost, Bialystok, Poland
[20] Roche Diagnost GmbH, Rotkreuz, Switzerland
[21] Roche Diagnost GmbH, Penzberg, Germany
[22] Indiana Univ Sch Med, Dept Pathol & Lab Med, Indianapolis, IN 46202 USA