- Correspondence to: Dr I G Stolte Health Service Amsterdam, Cluster of Epidemiology, Documentation and Health Promotion, Nieuwe Achtergracht 100, PO box 2200 1000 CE Amsterdam, The Netherlands;
- Accepted February 3, 2007
- First published February 21, 2007.
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.