@article{ref1,
title="Physical activity, participation in team sports, and risk of suicidal behavior in adolescents",
journal="American journal of health promotion",
year="1997",
author="Unger, J. B.",
volume="12",
number="2",
pages="90-93",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0890-1171",
doi="",
url="http://dx.doi.org/"
}