@article{ref1,
title="The role of prevention",
journal="Substance use and misuse",
year="1996",
author="Johnson, E. M.",
volume="31",
number="6",
pages="767-770",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1082-6084",
doi="",
url="http://dx.doi.org/"
}