1. The National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
2. The National Research Centre for the Working Environment, Copenhagen, Denmark
3. COWI, Lyngby, Denmark
4. Department of Psychology, University of Copenhagen, Copenhagen, Denmark
5. Anerkendende Psykologpraksis, Herlev, Denmark
6. BUPL Copenhagen Ø, Denmark
7. Section of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark