1. Department of Public Health, University of Turku and Turku University Hospital, Finland
2. Stress Research Institute, Stockholm University, Sweden
3. Faculty of Social Sciences (Health Sciences), University of Tampere, Finland
4. Department of Epidemiology and Public Health, University College London, UK
5. Clinicum, Faculty of Medicine, University of Helsinki, Finland
6. Finnish Institute of Occupational Health, Helsinki and Turku, Finland
7. Department of Public Health, Copenhagen University, Denmark