@article{ref1,
title="Cardiac injuries due to nonpenetrating thoracic trauma",
journal="Annals of thoracic surgery",
year="1972",
author="Madoff, I. M. and Desforges, G.",
volume="14",
number="5",
pages="504-512",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4975",
doi="",
url="http://dx.doi.org/"
}