@article{ref1,
title="Surprises in dental offices. The risk of mercury vapor",
journal="Revista Española de Estomatología",
year="1972",
author="",
volume="20",
number="3",
pages="169-172",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0484-7563",
doi="",
url="http://dx.doi.org/"
}