@article{ref1,
title="Blunt abdominal trauma",
journal="Northwest medicine",
year="1957",
author="Mccallum, G. T.",
volume="56",
number="4",
pages="463-464",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0029-3385",
doi="",
url="http://dx.doi.org/"
}