1. Work Ability and Working Careers, Finnish Institute of Occupational Health, Helsinki, Finland
2. Department of Psychology, University of Jyväskylä, Finland
3. Finnair, Helsinki, Finland
4. Department of Clinical Neurophysiology, University of Helsinki and Helsinki University Hospital, University of Helsinki, Helsinki, Finland
5. Stress Research Institute, Stockholm University, Stockholm, Sweden
6. Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden