@article{ref1,
title="Sleep deprivation and performance in doctors",
journal="European heart journal",
year="2009",
author="Taylor, Jennifer",
volume="30",
number="23",
pages="2826-2828",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0195-668X",
doi="",
url="http://dx.doi.org/"
}