@article{ref1,
title="Helmets for preventing head and facial injuries in bicyclists",
journal="Nursing times",
year="2001",
author="Thompson, Ricardo and Rivara, Frederick P. and Thompson, D. C.",
volume="97",
number="43",
pages="41-41",
abstract="Abstract unavailable.",
language="",
issn="0954-7762",
doi="",
url="http://dx.doi.org/"
}