- Correspondence to:
Mr D L Boyle
UCSD School of Medicine, 0656, 9500 Gilman Drive, La Jolla California 92093-0656, USA;
- Accepted September 24, 2004
- First published October 21, 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.