- Correspondence to Dr Roderick John McClure, Division of Analysis, Research and Practice Integration (DARPI), National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, 4770 Buford Highway NE, MS F-62, Atlanta, GA 30341, USA;
- Received September 2, 2015
- Revised November 4, 2015
- Accepted November 10, 2015
- First published December 9, 2015.
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