Funding for this research was provided by:
National Institute of Food and Agriculture (AFRI 2014-08390)
Received: 19 March 2018
Accepted: 9 September 2018
First Online: 14 September 2018
Ethics approval and consent to participate
: The Iowa State University Institutional Review Board (IRB) approved the study and made an exempt determination for the school-based components of the project since it was minimal risk and consistent with normal educational activities in schools. Informed consent was not required for the use of the data collected in the project.
: Not applicable.
: The authors declare that they have no competing interests
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