@article{ref1,
title="Trend highlights from the Ontario Student Drug Use Survey, 1977-1991",
journal="Canadian journal of public health",
year="1993",
author="Adlaf, Edward M. and Smart, Reginald G. and Walsh, G. W.",
volume="84",
number="1",
pages="64-65",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0008-4263",
doi="",
url="http://dx.doi.org/"
}