@article{ref1,
title="Upper retroperitoneal injuries",
journal="British journal of surgery",
year="1971",
author="Attard, J.",
volume="58",
number="1",
pages="55-60",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-1323",
doi="",
url="http://dx.doi.org/"
}