1. Clinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden
2. Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, the Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
3. Biogen, Cambridge, Massachusetts
4. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Gothenburg, Sweden
5. Department of Molecular Neuroscience, University College London Institute of Neurology, Queen Square, London, England
6. Memory Clinic, Skåne University Hospital, Malmö, Sweden