- Correspondence to:
Prof. J Tuomisto
Department of Environmental Health, KTL (National Public Health Institute), PO Box 95, FIN-70701, Kuopio, Finland;
- First published July 21, 2006.
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.