- Correspondence to Sarah L Hargrove, Kentucky Injury Prevention and Research Center, University of Kentucky, 10511 LaGrange Rd, Louisville, KY 40223, USA;
- Received 26 December 2016
- Revised 25 April 2017
- Accepted 13 June 2017
- Published in print 22 July 2017.
- Published online 24 July 2017.
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