@article{ref1,
title="Are anaesthetic gases harmful to operating theatre staff?",
journal="Annals of clinical research",
year="1972",
author="Nikki, P.",
volume="4",
number="5",
pages="247-249",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4762",
doi="",
url="http://dx.doi.org/"
}