@article{ref1,
title="The Cochrane Collaboration and bicycle helmets",
journal="Child: care, health and development",
year="2005",
author="",
volume="31",
number="4",
pages="489-490",
abstract="Abstract unavailable.",
language="",
issn="0305-1862",
doi="10.1111/j.1365-2214.2005.00535_2.x",
url="http://dx.doi.org/10.1111/j.1365-2214.2005.00535_2.x"
}