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