1. Department of Health Economics and Health Services Research, Hamburg Center for Health Economics; University Medical Center Hamburg-Eppendorf; Hamburg Germany
2. Department of Primary Medical Care, Center for Psychosocial Medicine; University Medical Center Hamburg-Eppendorf; Hamburg Germany
3. Institute of General Practice; Hannover Medical School; Hannover Germany
4. Central Institute of Mental Health, Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
5. Institute of General Practice, Medical Faculty; Heinrich-Heine-University Düsseldorf; Düsseldorf Germany
6. Institute of Social Medicine, Occupational Health and Public Health; University of Leipzig; Leipzig Germany
7. Department of Economic & Social Sciences; University of Applied Sciences Nordhausen; Nordhausen Germany
8. Department of Psychiatry; Technical University of Munich; Munich Germany
9. Department for Neurodegenerative Diseases and Geriatric Psychiatry; University of Bonn; Bonn Germany
10. DZNE, German Center for Neurodegenerative Diseases; Bonn Germany