@article{ref1,
title="Is there a causal linkage between cannabis use and increased risks of psychotic symptoms?",
journal="Addiction",
year="2010",
author="Fergusson, David M.",
volume="105",
number="8",
pages="1336-1337",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0965-2140",
doi="10.1111/j.1360-0443.2010.02959.x",
url="http://dx.doi.org/10.1111/j.1360-0443.2010.02959.x"
}