@article{ref1,
title="'Car-crusher colon'",
journal="British journal of surgery",
year="1993",
author="Leung, S. K. and Cheung, H. Y. and Leung, L. C.",
volume="80",
number="11",
pages="1491-1491",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-1323",
doi="",
url="http://dx.doi.org/"
}