@article{ref1,
title="From the ecological to the individual and back again",
journal="Addiction",
year="2004",
author="Gruenewald, Paul J.",
volume="99",
number="10",
pages="1249-50; discussion 1252",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0965-2140",
doi="10.1111/j.1360-0443.2004.00890.x",
url="http://dx.doi.org/10.1111/j.1360-0443.2004.00890.x"
}