@article{ref1,
title="Children and sports: a message from preventive medicine and your physician",
journal="Preventive medicine",
year="2000",
author="Ulene, V.",
volume="31",
number="1",
pages="9-10",
abstract="Abstract unavailable.",
language="",
issn="0091-7435",
doi="10.1006/pmed.2000.0704",
url="http://dx.doi.org/10.1006/pmed.2000.0704"
}