Text and Data Mining valid from 2019-03-12
Received: 7 November 2018
Accepted: 21 February 2019
First Online: 12 March 2019
Ethics approval and consent to participate
: This project did not meet the definition of research under 45 CFR 46.102(d), therefore Institutional Review Board approval was not required, as determined by a Human Subjects Advisor at the National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention (CDC).
: Not applicable.
: The authors declare that they have no competing interests.
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