- Correspondence to:
Dr L Högberg
Department of Paediatrics, Linköping University, Norrköping Hospital, SE-601 82 Norrköping, Sweden;
- Accepted November 12, 2003
- First published April 13, 2004.
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.