- Correspondence to: K Michael Cummings PhD MPH Roswell Park Cancer Institute, Department of Health Behavior, Elm and Carlton Streets, Buffalo, New York 14263, USA;
- Received May 5, 2004
- Accepted October 28, 2004
- First published March 24, 2005.
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.