@article{ref1,
title="A proportional mortality study of a group of newspaper workers",
journal="British journal of industrial medicine",
year="1972",
author="Greenberg, Michael",
volume="29",
number="1",
pages="15-20",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0007-1072",
doi="",
url="http://dx.doi.org/"
}