1. Department of Neurobiology, Caring Sciences and Society (NVS), Division of Clinical Geriatrics, Karolinska Institute, Stockholm, Sweden
2. Department of Geriatric Medicine, Karolinska University Hospital Huddinge, Stockholm, Sweden
3. Center for Age-Related Medicine, Stavanger University Hospital, Stavanger, Norway
4. Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at University of Gothenburg, Gothenburg, Gothenburg, Sweden
5. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
6. Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas, NV, USA
7. Department of Neurobiology, Karolinska Institute, Caring Sciences and Society (NVS), Center for Alzheimer Research, Division of Neurogeriatrics, Huddinge, Sweden