@article{ref1,
title="Epidemiology of heroin dependency among soldiers in Vietnam",
journal="Military medicine",
year="1974",
author="Holloway, H. C.",
volume="139",
number="2",
pages="108-113",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-4075",
doi="",
url="http://dx.doi.org/"
}