@article{ref1,
title="Correlates of heavy backpack use by elementary school children",
journal="Public health",
year="2004",
author="Forjuoh, S. N. and Schuchmann, J. A. and Lane, B. L.",
volume="118",
number="7",
pages="532-535",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-3506",
doi="10.1016/j.puhe.2003.10.010",
url="http://dx.doi.org/10.1016/j.puhe.2003.10.010"
}