@article{ref1,
title="Bicycle ownership, use, and injury patterns among elementary school children",
journal="Pediatrics",
year="1971",
author="Waller, Julian A.",
volume="47",
number="6",
pages="1042-1050",
abstract="Abstract unavailable.",
language="",
issn="0031-4005",
doi="",
url="http://dx.doi.org/"
}