@article{ref1,
title="A clinical evaluation of 81 heroin addicts in Vietnam",
journal="Military medicine",
year="1973",
author="Lloyd, S. J. and Frates, R. C. and Domer, D. C.",
volume="138",
number="5",
pages="298-300",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-4075",
doi="",
url="http://dx.doi.org/"
}