1. Clinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden
2. Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam University Medical Center, Amsterdam, the Netherlands
3. Institute of Neuroscience & Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
4. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
5. Department of Neurodegenerative Disease, University College London Institute of Neurology, London, United Kingdom
6. United Kingdom Dementia Research Institute at University College London, London, United Kingdom
7. Mass Spectrometry Laboratory, Araclon Biotech, Zaragoza, Spain
8. Roche Diagnostics, Penzberg, Germany
9. F. Hoffmann-La Roche, Basel, Switzerland
10. Department of Neurology, Washington University School of Medicine, St Louis, Missouri
11. National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
12. Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
13. Center for Development of Advanced Medicine for Dementia, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
14. Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
15. Memory Clinic, Skåne University Hospital, Malmö, Sweden