Text and Data Mining valid from 2019-01-05
First Online: 5 January 2019
Compliance with Ethical Standards
: The authors declare that they have no conflicts of interest.
: This research project involved human participants. The authors certify that this project received approval from the Institutional Review Board at the University of Illinois at Urbana-Champaign.
: The authors certify that in accordance with the guidelines of the Institutional Review Board at University of Illinois at Urbana-Champaign, all participants provided informed consent before participating in this study.