- Correspondence to Gabriella Johansson, Division of Occupational and Environmental Medicine, SUS Lund, Lund SE-221 85, Sweden;
- Received 31 October 2013
- Revised 16 March 2014
- Accepted 29 March 2014
- Published online 9 June 2014.
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.