@article{ref1,
title="Physical, psychological, blood serum, and mood predictors of success in preliminary underwater demolition team training",
journal="Military medicine",
year="1977",
author="Biersner, R. J. and Ryman, D. H. and Rahe, R. H.",
volume="142",
number="3",
pages="215-219",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-4075",
doi="",
url="http://dx.doi.org/"
}