Received: 30 July 2020
Accepted: 27 September 2020
First Online: 12 October 2020
Ethics approval and consent to participate
: Ethics approval was obtained from the IRB at each participating center. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee from each participating center and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Not applicable
: The authors declare that they have no conflict of interest. The views expressed in this material are those of the authors and do not reflect the official policy of position of the US Government, the Department of Defense, the Department of the Air Force, or any of the affiliated institutions.