@article{ref1,
title="Cardiac stab wounds",
journal="American surgeon",
year="1957",
author="Lyons, C. and Perkins, R.",
volume="23",
number="6",
pages="507-519",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-1348",
doi="",
url="http://dx.doi.org/"
}