Text and Data Mining valid from 2019-11-21
First Online: 21 November 2019
Compliance with Ethical Standards
: This manuscript does not report on a clinical trial.
: The authors declare that they have no conflicts of interest.
: Work for this article was completed by federal government employees or contractors supporting the Defense Health Agency or the Department of Veterans Affairs. The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or reflecting the views of the US government, the Department of Defense, the Defense Health Agency, or Department of Veterans Affairs.