1. Mannheim Institute of Public Health, Social and Preventive Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany;
2. Department of Clinical Psychology, University of Amsterdam, Amsterdam, The Netherlands;
3. Stress Research Institute, Stockholm University, Stockholm, Sweden;
4. Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden;
5. Institute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Faculty of Medicine, University of Düsseldorf, Düsseldorf, Germany