@article{ref1,
title="Silage gas poisoning: nitrogen dioxide pneumonia, a new disease in agricultural workers",
journal="Annals of internal medicine",
year="1956",
author="Grayson, R. R.",
volume="45",
number="3",
pages="393-408",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4819",
doi="",
url="http://dx.doi.org/"
}