Funding for this research was provided by:
National Science Foundation (1431578, 1205670)
Text and Data Mining valid from 2018-04-02
Received: 5 October 2017
Accepted: 6 March 2018
First Online: 2 April 2018
Ethics approval and consent to participate
: This project 2017150 was approved by the Texas State University Institutional Review Board.
: The authors declare that they have no competing interests.
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