1. Department of Psychiatry, University of Bonn, Germany
2. German Center for Neurodegenerative Diseases, Bonn, Germany
3. Center for Geriatric Medicine, Ortenau Klinikum, Offenburg-Gengenbach, Germany
4. Department of Gerontopsychiatry, Central Institute of Mental Health, Mannheim, Germany
5. Department of Psychiatry, Technical University of Munich, Germany
6. Department of Neurology, University of Aachen, Germany
7. Department of Neurology, Université Pierre et Marie Curie (Sorbonne), and AXA Research Fund & UPMC Chair, Paris, France
8. Department of Psychiatry, Charité Berlin, Campus Benjamin Franklin, Berlin, Germany
9. Department of Psychiatry, University of Hamburg, Germany
10. Department of Psychiatry, University of Düsseldorf, Germany
11. Center for Psychiatry, Clinic for Geronto- and Neuropsychiatry Emmendingen and Dep. of Psychiatry, University of Freiburg, Germany
12. Department of Psychiatry, University of Leipzig, Germany
13. Section for Geriatric Psychiatry/Institute of Gerontology, University of Heidelberg, Germany
14. Institute of General Medicine University of Frankfurt, Frankfurt am Main, Germany
15. Department of Medical Informatics, University of Göttingen, Germany
16. Department of Psychiatry and Psychotherapy, University of Göttingen, Germany
17. Ichan School of Medicine at Mt. Sinai, New York, USA
18. Department of Psychiatry, Medical Faculty University of Cologne, Germany
19. Department of Psychiatry, Friedrich-Alexander-University Erlangen, Germany