- Correspondence to Patrick E Jamieson, Adolescent Risk Communication Institute (ARCI), Annenberg Public Policy Center, University of Pennsylvania, 202 South 36th Street, Philadelphia, Pennsylvania 19104, USA;
- Received November 10, 2009
- Accepted January 20, 2010
- First published April 15, 2010.
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.