@article{ref1,
title="Communication of suicidal intent and suicide in unipolar depression. A forty year follow-up",
journal="Journal of affective disorders",
year="1979",
author="Tsuang, M. T. and Kronfol, Z.",
volume="1",
number="3",
pages="219-225",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0165-0327",
doi="",
url="http://dx.doi.org/"
}