@article{ref1,
title="Driving with heart disease",
journal="Harvard heart letter",
year="2001",
author="",
volume="12",
number="4",
pages="1-2",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1051-5313",
doi="",
url="http://dx.doi.org/"
}