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Contributors JM conducted analyses and wrote manuscript. WJS designed the study and collected data. MES-P collected data and cleaned database. JCM managed and cleaned longitudinal database. TMB, VFC and ABM provided manuscript edits. All authors have approved the submitted version. All authors have agreed both to be personally accountable for the author’s own contributions and to ensure that questions related to the accuracy or integrity of any part of the work, even ones in which the author was not personally involved, are appropriately investigated, resolved and the resolution documented in the literature.
Funding This study was funded by Military Operational Medicine Research Program (24880).
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.