- Dr K Patrick, Professor of Family and Preventive Medicine, University of California, San Diego, 9500 Gilman Drive, Dept 0811, La Jolla, CA 92093-0811, USA;
- Accepted October 24, 2008
- First published November 10, 2008.
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.