@article{ref1,
title="Carbon dioxide poisoning",
journal="La Semana Médica",
year="1954",
author="Negrete, D. H.",
volume="104",
number="2",
pages="33-36",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0370-9590",
doi="",
url="http://dx.doi.org/"
}