@article{ref1,
title="Perforation of the caecum by blunt abdominal trauma",
journal="IMJ Illinois medical journal",
year="1969",
author="Raffensperger, J. G. and Angress, G.",
volume="136",
number="5",
pages="565-6 passim",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0019-2120",
doi="",
url="http://dx.doi.org/"
}