@article{ref1,
title="The continuing conundrum of craving",
journal="Addiction",
year="2009",
author="Tiffany, STEPHEN T. and Wray, JENNIFER",
volume="104",
number="10",
pages="1618-1619",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0965-2140",
doi="10.1111/j.1360-0443.2009.02588.x",
url="http://dx.doi.org/10.1111/j.1360-0443.2009.02588.x"
}