@article{ref1,
title="Suicide and overdose among opiate addicts",
journal="Addiction",
year="1996",
author="Farrell, M. and Neeleman, J. and Griffiths, P. and Strang, J.",
volume="91",
number="3",
pages="321-323",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0965-2140",
doi="",
url="http://dx.doi.org/"
}