@article{ref1,
title="Signs of heroin usage detected by drug users and their parents",
journal="Lancet",
year="1967",
author="Rathod, N. H. and de Alarcón, R. and Thomson, I. G.",
volume="2",
number="7531",
pages="1411-1414",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0140-6736",
doi="",
url="http://dx.doi.org/"
}