@article{ref1,
title="Fatigue, sleep and seasonal hormone levels: Implications for drinking behavior in northern climates",
journal="Drugs and society",
year="1993",
author="Levine, M.E. and Duffy, L.K. and Bowyer, R.T.",
volume="8",
number="2",
pages="61-70",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="8756-8233",
doi="10.1300/J023v08n02_04",
url="http://dx.doi.org/10.1300/J023v08n02_04"
}