@article{ref1,
title="Pericardial tamponade due to penetrating fragment wounds of the heart",
journal="American journal of surgery",
year="1969",
author="Tassi, A. A. and Davies, A. L.",
volume="118",
number="4",
pages="535-538",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9610",
doi="",
url="http://dx.doi.org/"
}