@article{ref1,
title="The opiates and their derivatives",
journal="Texas medicine",
year="1973",
author="DeBoer, L.",
volume="69",
number="6",
pages="47-53",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0040-4470",
doi="",
url="http://dx.doi.org/"
}