@article{ref1,
title="The changing panorama of collision injury",
journal="Surgery, gynecology and obstetrics",
year="1971",
author="Nahum, A. M. and Siegel, Arnold W.",
volume="133",
number="5",
pages="783-791",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0039-6087",
doi="",
url="http://dx.doi.org/"
}