@article{ref1,
title="Poisoning by drug overdose",
journal="Canadian Medical Association journal",
year="1977",
author="",
volume="117",
number="5",
pages="424-429",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0008-4409",
doi="",
url="http://dx.doi.org/"
}