@article{ref1,
title="Sports injuries and injury-preventive behavior related to hockey and volleyball in the Netherlands",
journal="International journal for consumer safety",
year="1994",
author="den Hertog, Paul",
volume="1",
number="2",
pages="93-100",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0929-8347",
doi="",
url="http://dx.doi.org/"
}