@article{ref1,
title="A study of the effect of protracted occupational exposure to carbon monoxide with special reference to the occurrence of so-called chronic carbon monoxide poisoning",
journal="Acta medica Scandinavica, Supplementum",
year="1961",
author="Lindgren, S. A.",
volume="356",
number="",
pages="1-135",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0365-463X",
doi="",
url="http://dx.doi.org/"
}