1. Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital Bonn, Bonn, Germany
2. German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
3. Department of Psychiatry and Psychotherapy, Charité, Campus Benjamin Franklin, Berlin, Germany
4. German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany
5. Department of Geriatric Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
6. Department of Psychiatry and Psychotherapy, University Medical Center Göttingen (UMG), University of Göttingen, Göttingen, Germany
7. German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
8. iBiMED, Medical Science Department, University of Aveiro, Aveiro, Portugal
9. Department of Psychiatry and Psychotherapy, University Hospital Erlangen, and Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
10. Center for Geriatric Medicine and Gerontology, University of Freiburg, Freiburg, Germany
11. Department of Neurodegeneration Diagnostics, Medical University of Biasłystok, and Department of Biochemical Diagnostics, University Hospital of Bialystok, Bialystok, Poland
12. German Center for Neurodegenerative Diseases (DZNE), Cologne, Germany
13. Department of Psychiatry and Psychotherapy, University Hospital Cologne, Cologne, Germany