@article{ref1,
title="Hats off (or not?) to helmet legislation",
journal="CMAJ : Canadian Medical Association journal",
year="2002",
author="Chipman, M. L.",
volume="166",
number="5",
pages="602-602",
abstract="Abstract unavailable.",
language="",
issn="0820-3946",
doi="",
url="http://dx.doi.org/"
}