@article{ref1,
title="How can physicians get kids to wear bicycle helmets? A prototypic challenge in injury prevention",
journal="American journal of public health",
year="1991",
author="Runyan, Carol S. Wolf and Runyan, Desmond Kimo",
volume="81",
number="8",
pages="972-973",
abstract="Abstract unavailable",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}