- Dr Villó, Servicio de Pediatria, Hospital Universitario Príncipe de Asturias, Carretera de Alcalá-Meco s/n, Alcalá de Henares, Madrid, España email:
- Accepted May 4, 2000
- First published January 1, 2001.
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.