@article{ref1,
title="Impact of survival bias on opioid-related outcomes when using death as an exclusion criterion",
journal="Pharmacoepidemiology and drug safety",
year="2016",
author="Osborne, Vicki",
volume="25",
number="4",
pages="476-476",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1053-8569",
doi="10.1002/pds.3957",
url="http://dx.doi.org/10.1002/pds.3957"
}