@article{ref1,
title="How much do crashes related to obstructive sleep apnea cost?",
journal="Sleep",
year="2004",
author="Pack, Allan I. and Pien, GW",
volume="27",
number="3",
pages="369-370",
abstract="Abstract unavailable.",
language="",
issn="0161-8105",
doi="",
url="http://dx.doi.org/"
}