@article{ref1,
title="The use of substitute subjects in the study of suicide",
journal="European journal of psychiatry",
year="2001",
author="Black, S. T. and Lester, David",
volume="15",
number="3",
pages="133-136",
abstract="A comparison of suicide notes written by completed and attempted suicides for 52 content categories identified no significant differences, indicating that the study of completed suicide by the method of substitute subjects may be a valid approach.<p />",
language="",
issn="0213-6163",
doi="",
url="http://dx.doi.org/"
}