@article{ref1,
title="Drug abuse in Japan",
journal="Nihon Arukoru Yakubutsu Igakkai Zasshi",
year="1998",
author="Matsumura, Y.",
volume="33",
number="5",
pages="597-602",
abstract="<p>[Abstract unavailable]</p><p>Language: ja</p>",
language="ja",
issn="1341-8963",
doi="",
url="http://dx.doi.org/"
}