@article{ref1,
title="Abnormal sleep duration and motor vehicle crash risk",
journal="Journal of sleep research",
year="2004",
author="Marshall, Nathaniel S. and Bolger, Warren and Gander, Philippa H.",
volume="13",
number="2",
pages="177-178",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0962-1105",
doi="10.1111/j.1365-2869.2004.00402.x",
url="http://dx.doi.org/10.1111/j.1365-2869.2004.00402.x"
}