- Correspondence to Dr Frank de Vocht, Centre for Occupational and Environmental Health, Health Sciences Research Group, School of Community Based Medicine, Faculty of Medical and Human Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, UK;
- Accepted October 15, 2010
- First published November 20, 2010.
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.