Received: 14 May 2019
Accepted: 6 September 2019
First Online: 23 September 2019
Ethics approval and consent to participate
: The Oklahoma State University Institutional Review Board for Human Subject Research approved this study (ED-18-39 STW IRB). The study was exempt from the consent process because the data that were used in the study were previously archived (i.e., retroactive) and deidentified.
: Not applicable.
: The authors declare that they have no competing interests.