@article{ref1,
title="Association of facial trauma, severity of head injury, and helmets in bicycle riders: a National Trauma Data Bank study",
journal="Journal of the American Academy of Surgeons",
year="2015",
author="Haider, Ansab A. and Rhee, Peter M. and Khalil, Mazhar and Kulvatunyou, Narong and Zangbar, Bardiya and O'Keeffe, Terence and Tang, Andrew L. and Latifi, Rifat and Friese, Randall S. and Joseph, Bellal",
volume="221",
number="4",
pages="S134-S134",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1072-7515",
doi="",
url="http://dx.doi.org/"
}