- 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 10 November 2009
- Accepted 20 January 2010
- Published in print 1 June 2010.
- Published online 25 May 2010.
- Published first 15 April 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.