Text and Data Mining valid from 2019-08-23
Received: 6 January 2019
Accepted: 13 August 2019
First Online: 23 August 2019
Ethics approval and consent to participate
: Ethics approval and consent to participate: This project had IRB approval from both the University of Kentucky and the Lexington VA Medical Center.
: Not applicable.
: The authors declare that they have no competing interests.