@article{ref1,
title="Cannabis",
journal="Drug and therapeutics bulletin",
year="1967",
author="",
volume="5",
number="25",
pages="97-99",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0012-6543",
doi="",
url="http://dx.doi.org/"
}