- Dr S Schneider, Mannheim Institute of Public Health, Social and Preventive Medicine, Mannheim Medical Faculty, Heidelberg University, Ludolf Krehl Strasse 7-11, D-68167 Mannheim, Germany;
- Received October 9, 2008
- Accepted May 11, 2009
- First published June 11, 2009.
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.