@article{ref1,
title="The acute abdomen and trauma",
journal="New Zealand medical journal",
year="1951",
author="Karn, H. M.",
volume="50",
number="276",
pages="142-148",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-8446",
doi="",
url="http://dx.doi.org/"
}