- Correspondence to Dr Anne T McCartt, Department of Research, Insurance Institute for Highway Safety, 1005 N. Glebe Road, Suite 800, Arlington, Virginia 22201, USA;
- Received August 13, 2014
- Revised October 31, 2014
- Accepted November 13, 2014
- First published December 18, 2014.
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.