@article{ref1,
title="Increasing bicycle helmet use among school-age children",
journal="Nurse practitioner",
year="1996",
author="McEvoy, M.",
volume="21",
number="4",
pages="14-6, 150",
abstract="Abstract unavailable.",
language="",
issn="0361-1817",
doi="",
url="http://dx.doi.org/"
}