- Correspondence to Dr Laura M Mercer Kollar, Division of Violence Prevention, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA;
- Received December 27, 2018
- Revised March 5, 2019
- Accepted March 8, 2019
- First published April 16, 2019.
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.