Received: 31 January 2020
Accepted: 4 April 2020
First Online: 9 April 2020
Ethic approval and consent to participate
: Studies in this report were approved by Bamrungrad IRB, The Ethical Review Committee for Research in Human Subjects, Thai Ministry of Public Health, and WRAIR IRB. The consents to participate were signed by subjected for future use studies.
: Not applicable.
: Material has been reviewed by the Walter Reed Army Institute of Research. There is no objection to its presentation and/or publication. The opinions or assertions contained herein are the private views of the author, and are not to be construed as official, or as reflecting true views of the Department of the Army or the Department of Defense. The investigators have adhered to the policies for protection of human subjects as prescribed in AR 70–25.“Authors are US military service members (BES and JC) and employees of the US government (PG, FP, LB). This work was prepared as part of official duties. Title 17 U.S.C. 105 provides that ‘copyright protection under this title is not available for any work of the United States Government.’ Title 17 U.S.C. 101 defines a U.S. Government work as work prepared by a military service member or employee of the U.S. Government as part of that person’s official duties”.