- John P Pierce, PhD, Cancer Prevention and Control Program, Cancer Center, 0645, University of California, San Diego, La Jolla, CA 92093-0645, USA
- Received 23 June 2000
- Revised 17 November 2000
- Accepted 3 February 2001
- Published online 1 June 2001.
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.