@article{ref1,
title="Habitual ‘short sleep’: six hours is ‘safe’",
journal="Journal of sleep research",
year="2010",
author="Horne, Jim",
volume="19",
number="1‐Part‐I",
pages="119-120",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0962-1105",
doi="10.1111/j.1365-2869.2009.00804.x",
url="http://dx.doi.org/10.1111/j.1365-2869.2009.00804.x"
}