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Contributors JPA designed and revised the paper. He is the guarantor. KAM and RJM created the initial draft and participated in revisions. JAT participated in the design and the revision of the paper.
Competing interests JPA is a member of the Board of Scientific Counselors, Centers for Disease Control and Prevention, National Center for Injury Prevention and Control. The findings and conclusions in this manuscript are those of the authors and do not necessarily represent the views of the Centers for Disease Control and Prevention.
Provenance and peer review Not commissioned; internally peer reviewed.
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