@article{ref1,
title="Aspiration of barnyard manure",
journal="Minnesota medicine",
year="1983",
author="Guerin, C. K. and Owen, R. A. and Keys, T. F.",
volume="66",
number="6",
pages="359-360",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-556X",
doi="",
url="http://dx.doi.org/"
}