Funding for this research was provided by:
University of Minnesota, Duluth, Undergraduate Research Opportunities Program
Text and Data Mining valid from 2019-11-02
First Online: 2 November 2019
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (University of Minnesota Human Research Protection Program; STUDY00001893) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.