- Correspondence to:
Professor D Stone, Paediatric Epidemiology and Community Health (PEACH) Unit, Department of Child Health, University of Glasgow, Yorkhill Hospital, Glasgow G3 8SJ, UK;
- Accepted October 9, 2002
- First published May 1, 2003.
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.