- Correspondence to: Dr F Forastiere Dipartimento di Epidemiologia, ASL RM/E, Via di Santa Costanza, 53, 00198 Roma, Italy;
- Accepted September 7, 2005
- First published December 16, 2005.
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.