@article{ref1,
title="Gender differences in drug use: an epidemiological perspective",
journal="NIDA research monograph",
year="1986",
author="Clayton, Richard R. and Voss, H. L. and Robbins, C. and Skinner, W. F.",
volume="65",
number="",
pages="80-99",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1046-9516",
doi="",
url="http://dx.doi.org/"
}