@article{ref1,
title="Suicide and vehicle exhaust emissions",
journal="British medical journal: BMJ",
year="1992",
author="O'Brien, J. T. and Tarbuck, A. F.",
volume="304",
number="6838",
pages="1376-1376",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}