@article{ref1,
title="Can sports-minded kids have too many helmets?",
journal="JAMA journal of the American Medical Association",
year="1996",
author="Cole, Thomas B.",
volume="275",
number="18",
pages="1391-1391",
abstract="unavailable.",
language="en",
issn="0098-7484",
doi="",
url="http://dx.doi.org/"
}