@article{ref1,
title="Finding studies for inclusion in systematic reviews of interventions for injury prevention the importance of grey and unpublished literature",
journal="Injury prevention",
year="2007",
author="Blackhall, Karen",
volume="13",
number="5",
pages="359-359",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1353-8047",
doi="10.1136/ip.2007.017020",
url="http://dx.doi.org/10.1136/ip.2007.017020"
}