@article{ref1,
title="Onset of symptoms after methadone overdose",
journal="American journal of emergency medicine",
year="2008",
author="Bird, Steven B. and Rosenbaum, Christopher",
volume="26",
number="2",
pages="242-242",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0735-6757",
doi="10.1016/j.ajem.2007.05.003",
url="http://dx.doi.org/10.1016/j.ajem.2007.05.003"
}