@article{ref1,
title="Hip injuries in the adolescent athlete",
journal="Pediatric annals",
year="2007",
author="Heyworth, Benton E. and Voos, James E. and Metzl, Jordan D.",
volume="36",
number="11",
pages="713-718",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0090-4481",
doi="",
url="http://dx.doi.org/"
}