- Correspondence to David Swedler, Center for Injury Research and Policy, Hampton House Room 554, 624 N. Broadway, Baltimore, Maryland 21205, USA
- Received February 27, 2013
- Revised April 19, 2013
- Accepted April 29, 2013
- First published May 31, 2013.
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.