Funding for this research was provided by:
Centers for Disease Control and Prevention (T42OH008455)
Indiana University School of Public Health Bloomington
Article History
Received: 9 June 2018
Accepted: 6 November 2018
First Online: 22 November 2018
Ethics approval and consent to participate
: Not applicable as participants were not enrolled in the study.
: Not applicable.
: The authors declare that they have no competing interests.
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