1. Clinical Memory Research Unit, Department of Clinical Sciences, Lund University, Lund, Sweden
2. Department of Neurology, Skåne University Hospital, Malmö, Sweden
3. Memory Clinic, Skåne University Hospital, Malmö, Sweden
4. Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
5. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
6. Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, United Kingdom
7. UK Dementia Research Institute at UCL, London, United Kingdom
8. Roche Diagnostics GmbH, Penzberg, Germany
9. Genentech, a Member of the Roche Group, Basel, Switzerland