@article{ref1,
title="Playground equipment contributing to a ring avulsion injury",
journal="Injury",
year="2000",
author="Hankin, F. M. and Janda, D. H. and Wittenberg, B.",
volume="31",
number="8",
pages="635-637",
abstract="Abstract unavailable.",
language="",
issn="0020-1383",
doi="",
url="http://dx.doi.org/"
}