1. Institute of Social Medicine; Occupational Health and Public Health; University of Leipzig; Leipzig Germany
2. Douglas Mental Health University Institute; McGill University; Montreal Canada
3. Hannover Medical School; Institute for Biometrics; Hannover Germany
4. Department of Primary Medical Care; Center for Psychosocial Medicine; University Medical Center Hamburg-Eppendorf; Hamburg Germany
5. Department of Psychiatry; University of Bonn; Bonn Germany
6. German Center for Neurodegenerative Diseases; DZNE; Bonn Germany
7. Department of Psychiatry; Klinikum rechts der Isar; Technical University of Munich; Munich Germany
8. Central Institute of Mental Health; Mannheim Germany
9. Medical Faculty; Institute of General Practice; Heinrich-Heine-University Düsseldorf; Düsseldorf Germany
10. Department of Medical Sociology and Health Economics; University Medical Center Hamburg-Eppendorf; Hamburg Germany