1. Department of Neurodegenerative Diseases and Geriatric Psychiatry, University of Bonn, Germany
2. DZNE, German Center for Neurodegenerative Diseases, Bonn, Germany
3. Division of Psychopathology and Clinical Intervention, Department of Psychology, University of Zurich, Switzerland
4. University Research Priority Program “Dynamics of Healthy Aging”, University of Zurich, Switzerland
5. Department of Psychiatry, Technical University of Munich, Germany
6. Department of Health Economics and Health Services Research, Hamburg Center for Health Economics, University Medical Center Hamburg-Eppendorf, Germany
7. Department of Primary Medical Care, Center for Psychosocial Medicine, University Medical Center, Hamburg-Eppendorf, Germany
8. Institute of Social Medicine, Occupational Health and Public Health (ISAP), University of Leipzig, Germany
9. Department of Economic and Social Sciences, University of Applied Sciences Nordhausen, Germany
10. Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Germany
11. Institute of General Practice, Medical Faculty, Heinrich-Heine-University Düsseldorf, Germany
12. WG Medical Statistics and IT-Infrastructure, Institute of General Practice, Hannover Medical School, Germany