@article{ref1,
title="Heart injury from nonpenetrating chest injuries",
journal="Industrial medicine and surgery",
year="1969",
author="Walters, J. R. Jr",
volume="38",
number="10",
pages="349-356",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0019-8536",
doi="",
url="http://dx.doi.org/"
}