1. Institute of Social Medicine; Occupational Health and Public Health (ISAP); University of Leipzig; Leipzig Germany
2. Work Group Medical Statistics and IT-Infrastructure; Institute for General Practice; Hannover Medical School; Hannover Germany
3. Department of Primary Medical Care; Center for Psychosocial Medicine; University Medical Center Hamburg-Eppendorf; Hamburg Germany
4. Department of Psychiatry; University of Bonn; Bonn Germany
5. Department of Psychiatry; Klinikum rechts der Isar; Technical University of Munich; Munich Germany
6. Institute of General Practice; Medical Faculty; Heinrich-Heine-University Düsseldorf; Düsseldorf Germany
7. Department of Health Economics and Health Services Research; Hamburg Center for Health Economics; University Medical Center Hamburg-Eppendorf; Hamburg Germany
8. Central Institute of Mental Health; Medical Faculty Mannheim/Heidelberg University; Mannheim Germany
9. DZNE; German Center for Neurodegenerative Diseases; Bonn Germany