@article{ref1,
title="Suicide frequency in drug addicts",
journal="Tidsskrift for den Norske Laegeforening",
year="1973",
author="Retterstol, N.",
volume="93",
number="31",
pages="2333-2333",
abstract="<p>[Abstract unavailable]</p><p>Language: no</p>",
language="no",
issn="0029-2001",
doi="",
url="http://dx.doi.org/"
}