- Correspondence to: Todd P Margolis MD PhD Francis I Proctor Foundation, University of California, San Francisco, 95 Kirkham Street, San Francisco, CA 94143, USA;
- Accepted March 22, 2004
- First published October 15, 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.