@article{ref1,
title="Arsenic in opium",
journal="Lancet",
year="1977",
author="Datta, D. V.",
volume="1",
number="8009",
pages="484-484",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0140-6736",
doi="",
url="http://dx.doi.org/"
}