Funding for this research was provided by:
Defense Health Program and Military Operational Medicine Research Program (Navy Bureau of Medicine and Surgery under work unit no. 60002. The funders were not involved in the design of the study, data collection, analysis, interpretation of data, or in writing the manuscript. This work was prepared as part of our official duties under the contract OMNIBUS W911QY-11-D-0053-0010.)
Text and Data Mining valid from 2018-10-24
Received: 28 December 2017
Accepted: 15 October 2018
First Online: 24 October 2018
Ethics approval and consent to participate
: Human subjects participated in this study after giving their free and informed written consent. This research has been conducted in compliance with all applicable federal regulations governing the protection of human subjects in research. This study was approved by the Institutional Review Board of Naval Health Research Center, San Diego, CA (Protocol NHRC.2000.0007).
: Not applicable
: The authors declare that they have no competing interests.
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