Funding for this research was provided by:
NSF (Graduate Research Fellowship, 16-25797, 13-23129, 13-22734)
Text and Data Mining valid from 2019-09-17
Received: 14 May 2019
Accepted: 27 August 2019
First Online: 17 September 2019
Ethics approval and consent to participate
: The study was approved by the Institutional Review Boards at both universities, and consent was obtained from all participants.
: The authors declare that they have no competing interests.