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This web only file has been produced by the BMJ Publishing Group from an electronic file supplied by the author(s) and has not been edited for content.
Footnotes
Correction notice This article has been corrected since it published Online First. The first sentence of the results section has been corrected.
Contributors The authors confirm contribution to the manuscript as follows: Study conception and design: MLS and NAG. Study execution and data collection: CRH and J'LB. Analysis and interpretation of results: NAG. Draft manuscript preparations: CRH, NAG and MLS. Final approval of the manuscript for publication: CRH, NAG, MLS and J'LB. All listed authors agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
Funding This work was supported, in part by, the Injury Prevention Research Center at Emory (NCIPC R49 CE003072), the Emory University Research Council, and the Christopher Wolf Crusade (CWC).
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.
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