@article{ref1,
title="Drug taking and drinking among 11-15 year olds in England have fallen over past 10 years",
journal="BMJ",
year="2012",
author="O'Dowd, Adrian",
volume="345",
number="online",
pages="e5153-e5153",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-535X",
doi="10.1136/bmj.e5153",
url="http://dx.doi.org/10.1136/bmj.e5153"
}