@article{ref1,
title="The defining characteristic of substance use disorders",
journal="Drug and alcohol dependence",
year="2021",
author="Strain, Eric C.",
volume="230",
number="",
pages="e109207-e109207",
abstract="[The publisher has not provided an abstract for this article.]<p /> <p>Language: en</p>",
language="en",
issn="0376-8716",
doi="10.1016/j.drugalcdep.2021.109207",
url="http://dx.doi.org/10.1016/j.drugalcdep.2021.109207"
}