@article{ref1,
title="Analysis of health-risk behaviors and their influencing factors in middle school students",
journal="Journal of Xi'an Medical University, Chinese Edition",
year="2001",
author="Ouanqing, Z. and Yanqin, L. and Ping, L.",
volume="22",
number="6",
pages="568-571+574",
abstract="<p>[Abstract unavailable]</p><p>Language: zh</p>",
language="zh",
issn="0258-0659",
doi="",
url="http://dx.doi.org/"
}