@article{ref1,
title="Multiple risk behaviour in adolescence",
journal="Journal of public health (Oxford)",
year="2012",
author="Kipping, R. R. and Campbell, Rona M. and MacArthur, G. J. and Gunnell, D. J. and Hickman, M.",
volume="34",
number="Suppl 1",
pages="i1-i2",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1741-3842",
doi="10.1093/pubmed/fdr122",
url="http://dx.doi.org/10.1093/pubmed/fdr122"
}