Funding for this research was provided by:
U.S. Department of Health & Human Services | Centers for Disease Control and Prevention (5T42OH009229-11, 5T42OH009229-11)
Colorado State University
Article History
Received: 5 October 2018
Accepted: 24 April 2019
First Online: 9 May 2019
Competing Interests
: The authors declare no competing interests.