Text and Data Mining valid from 2019-11-26
Received: 27 June 2019
Accepted: 3 November 2019
First Online: 26 November 2019
Compliance with ethical standards
: None of the authors have any conflicts of interest to report.
: Institutional Review Board approval was obtained by the University of North Carolina.
: No procedures were performed on human subjects. All data analyzed in this study was part of a deidentified database.
: Informed consent was not indicated as this study involved only the analysis of previously collected and deidentified data and did not involve recruitment of any participants.