@article{ref1,
title="Gunshot wounds of the heart. Changing patterns of surgical management",
journal="Annals of thoracic surgery",
year="1971",
author="Beall, A. C. and Gasior, R. M. and Bricker, D. L.",
volume="11",
number="6",
pages="523-531",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4975",
doi="",
url="http://dx.doi.org/"
}