@article{ref1,
title="Defining Frequent Use: The Numbers No Longer Count",
journal="Annals of emergency medicine",
year="2012",
author="Weber, Ellen J.",
volume="60",
number="1",
pages="33-34",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0196-0644",
doi="10.1016/j.annemergmed.2012.02.019",
url="http://dx.doi.org/10.1016/j.annemergmed.2012.02.019"
}