@article{ref1,
title="Ambulance diversion: economic and policy considerations",
journal="Annals of emergency medicine",
year="2006",
author="Williams, Robert M.",
volume="48",
number="6",
pages="711-712",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0196-0644",
doi="10.1016/j.annemergmed.2006.06.009",
url="http://dx.doi.org/10.1016/j.annemergmed.2006.06.009"
}