@article{ref1,
title="The usefulness of 'age at first drink' as a concept in alcohol research and prevention",
journal="Addiction",
year="2016",
author="Hingson, R. and Zha, W. and White, A.",
volume="111",
number="6",
pages="968-970",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0965-2140",
doi="10.1111/add.13218",
url="http://dx.doi.org/10.1111/add.13218"
}