@article{ref1,
title="Some figures on lost time due to sickness and accident in industry",
journal="Canadian Medical Association journal",
year="1956",
author="Sellers, A. H. and Sutherland, R. B.",
volume="75",
number="5",
pages="418-420",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0008-4409",
doi="",
url="http://dx.doi.org/"
}