@article{ref1,
title="Physiological problems in air cabin crew",
journal="Proceedings of the Royal Society of Medicine",
year="1974",
author="Preston, F. S.",
volume="67",
number="9",
pages="825-829",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0035-9157",
doi="",
url="http://dx.doi.org/"
}