1. French National Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Vandoeuvre les Nancy Cedex, France
2. Institute for Occupational Safety and Health of the German Social Accident Insurance (IFA), Sankt Augustin, Germany
3. BG BAU - Berufsgenossenschaft der Bauwirtschaft, Gebersdorfer Straße, Nürnberg, Germany
4. BG BAU - Berufsgenossenschaft der Bauwirtschaft, Landsberger Straße, München, Germany