@article{ref1,
title="On combat pilots",
journal="American journal of otology",
year="1997",
author="Schall, D. G.",
volume="18",
number="5",
pages="687-688",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0192-9763",
doi="",
url="http://dx.doi.org/"
}