@article{ref1,
title="Commentary on Degenhardt et al. (2014): Regional variation in the global burden of disease attributable to opioid dependence-where do the data come from and does population size matter?",
journal="Addiction",
year="2014",
author="Hser, Yih-Ing and Evans, Elizabeth and Grella, Christine",
volume="109",
number="8",
pages="1334-1335",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0965-2140",
doi="10.1111/add.12597",
url="http://dx.doi.org/10.1111/add.12597"
}