@article{ref1,
title="Nonpenetrating abdominal trauma",
journal="AMA archives of surgery",
year="1956",
author="Pontius, G. V. and Kilbourne, B. C. and Paul, E. G.",
volume="72",
number="5",
pages="800-811",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-6908",
doi="",
url="http://dx.doi.org/"
}