@article{ref1,
title="Trends in the age of onset of narcotic addiction",
journal="Chemical dependencies",
year="1982",
author="Nurco, D. N. and Cisin, I. H. and Balter, M. B.",
volume="4",
number="3",
pages="221-228",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0276-5608",
doi="",
url="http://dx.doi.org/"
}