@article{ref1,
title="Traffic, anger strain the heart",
journal="Harvard heart letter",
year="2009",
author="",
volume="19",
number="11",
pages="7-7",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1051-5313",
doi="",
url="http://dx.doi.org/"
}