- Mrs Merete Labriola, National Research Center for the Working Environment, Lersø Parkallé 105 Copenhagen, Denmark, DK-2100;
- Accepted March 30, 2007
- First published January 11, 2008.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.