Funding for this research was provided by:
Congressionally Directed Medical Research Programs (GW130053)
Received: 22 December 2017
Accepted: 1 March 2018
First Online: 17 March 2018
Ethics approval and consent to participate
: All procedures were performed under protocols approved by the Institutional Animal Care and Use Committee of the Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health and the US Army Medical Research and Materiel Command Animal Care and Use Review Office. The animal facility was certified by AAALAC International.
: Not applicable
: The authors declare that they have no competing interests.
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