- Correspondence to: T L Conway PhD, San Diego State University, Graduate School of Public Health, 9245 Sky Park Court, Suite 120, San Diego, CA 92123, USA;
- Received May 7, 2003
- Accepted October 13, 2003
- First published February 25, 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.