Funding for this research was provided by:
U.S. Department of Veterans Affairs (NA)
Received: 10 February 2020
Accepted: 13 July 2020
First Online: 23 July 2020
Ethics approval and consent to participate
: This study was performed following approval of the Department of Veterans Affairs Puget Sound Health Care System Institutional Review Board. Written informed consent was obtained from test subjects.
: All subject identities were blinded, not applicable.
: The authors declare that they have no competing interests.