@article{ref1,
title="Narcotics use and abuse",
journal="Pennsylvania medicine",
year="1966",
author="Trellis, E. S.",
volume="69",
number="5",
pages="50-52",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-4595",
doi="",
url="http://dx.doi.org/"
}