@article{ref1,
title="A free clinic approach to drug abuse",
journal="Preventive medicine",
year="1973",
author="Gay, G. R. and Smith, David E.",
volume="2",
number="4",
pages="543-553",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0091-7435",
doi="",
url="http://dx.doi.org/"
}