1. Department of Psychiatry; University of Greifswald; Greifswald Germany
2. HELIOS Hanseklinikum Stralsund; Stralsund Germany
3. Institute of Community Medicine; University of Greifswald; Greifswald Germany
4. Institute of Social Medicine, Occupational Health and Public Health; University of Leipzig; Leipzig Germany
5. Institute of Health Economics and Health Services Research; University of Hamburg; Hamburg Germany
6. Department of Public Health; University of Cagliari; Cagliari Italy
7. Center for Public Mental Health; Gösing am Wagram Austria