1. The Swedish National Road and Transport Research Institute (VTI), Linköping, Sweden
2. Department of Psychology, Stress Research Institute, Stockholm University, Stockholm, Sweden
3. Rehabilitation Medicine, Linköping University, Linköping, Sweden
4. Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
5. Road and Rail Department, Swedish Transport Agency, Kista, Sweden
6. Transport Safety Research Centre, SDCA, Loughborough University, Loughborough, Leicestershire, UK