@article{ref1,
title="Narcolepsy, head injury, and the problem of causality",
journal="Journal of clinical sleep medicine",
year="2005",
author="Silber, Michael H.",
volume="1",
number="2",
pages="157-158",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1550-9389",
doi="",
url="http://dx.doi.org/"
}