@article{ref1,
title="Cardiac trauma",
journal="American heart journal",
year="1976",
author="Symbas, P. N.",
volume="92",
number="3",
pages="387-396",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8703",
doi="",
url="http://dx.doi.org/"
}