@article{ref1,
title="Cardiac trauma",
journal="Texas medicine",
year="1976",
author="Ching, E. C.",
volume="72",
number="7",
pages="49-52",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0040-4470",
doi="",
url="http://dx.doi.org/"
}