@article{ref1,
title="Sacral stress fracture in an elite college basketball player after the use of a jumping machine",
journal="American journal of sports medicine",
year="1999",
author="Crockett, H. C. and Wright, J. M. and Madsen, M. W. and Bates, J. E. and Potter, H. G. and Warren, R. F.",
volume="27",
number="4",
pages="526-528",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0363-5465",
doi="",
url="http://dx.doi.org/"
}