@article{ref1,
title="Epidemiology of pediatric closed head injury: incidence, clinical characteristics, and risk factors",
journal="Journal of learning disabilities (Thousand Oaks)",
year="1987",
author="Goldstein, F. C. and Levin, Harvey S.",
volume="20",
number="9",
pages="518-525",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-2194",
doi="",
url="http://dx.doi.org/"
}