@article{FERGUSSON_2003,
title={Cannabis dependence and psychotic symptoms in young people},
volume={33},
ISSN={1469-8978},
url={http://dx.doi.org/10.1017/s0033291702006402},
DOI={10.1017/s0033291702006402},
number={1},
journal={Psychological Medicine},
publisher={Cambridge University Press (CUP)},
author={FERGUSSON,
D. M. and HORWOOD,
L. J. and SWAIN-CAMPBELL,
N. R.},
year={2003},
month=jan,
pages={15–21} }