@article{ref1,
title="Clubs volunteering for sports injury prevention research - is there any selection bias?",
journal="Injury control and safety promotion",
year="2004",
author="Finch, Caroline F. and Braham, R. and Zazryn, Tsharni R.",
volume="11",
number="1",
pages="67-69",
abstract="Abstract unavailable",
language="",
issn="1566-0974",
doi="10.1076/icsp.11.1.67.26315",
url="http://dx.doi.org/10.1076/icsp.11.1.67.26315"
}