@article{ref1,
title="The design and use of cluster randomised controlled trials in evaluating injury prevention interventions: part 1. Rationale, design and informed consent",
journal="Injury prevention",
year="2010",
author="DiGuiseppi, Carolyn G. and Coupland, Carol A. C.",
volume="16",
number="1",
pages="61-67",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1353-8047",
doi="10.1136/ip.2009.023119",
url="http://dx.doi.org/10.1136/ip.2009.023119"
}