Received: 6 September 2017
Accepted: 28 March 2018
First Online: 12 April 2018
Ethics approval and consent to participate
: This study relied on de-identified, secondary data. IRB approval was received from the University of North Carolina at Charlotte, Internal Review Board (IRB #: 14–0531). The authors received all necessary administrative permissions to access and use the data included in this study.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.