@article{ref1,
title="Safety and health in the construction industry",
journal="British medical journal: BMJ",
year="1990",
author="",
volume="301",
number="6757",
pages="932-932",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}