Funding for this research was provided by:
U.S. Department of Defense (W81XWH-09-2-0142)
Horace H. Rackham School of Graduate Studies, University of Michigan
Received: 9 October 2017
Accepted: 30 April 2018
First Online: 25 May 2018
Ethics approval and consent to participate
: The study was approved by the University of Michigan Medical School’s Institutional Review Board and all methods were carried out in accordance with the approved study protocol. The subjects provided written informed consent before participation and consented to the publishing of their collected data.
: The authors declare that they have no competing interests.
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