@article{ref1,
title="What do student drug use surveys really mean?",
journal="Journal of school health",
year="2005",
author="Males, Mike A.",
volume="75",
number="1",
pages="31-34",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-4391",
doi="",
url="http://dx.doi.org/"
}