@article{ref1,
title="Toxicity of tungsten",
journal="Lancet",
year="1997",
author="Lison, D. and Buchet, J. P. and Hoet, P.",
volume="349",
number="9044",
pages="58-59",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0140-6736",
doi="",
url="http://dx.doi.org/"
}