@article{ref1,
title="Weapon changes over time after initiation of a comprehensive weapon surveillance system",
journal="American journal of emergency medicine",
year="1999",
author="Irvin, Charlene B. and Habas, R. C.",
volume="17",
number="3",
pages="323-324",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0735-6757",
doi="",
url="http://dx.doi.org/"
}