@inbook{55750036,
author={Roger L. Humphries, MD},
editor={Stone, C. Keith and Humphries, Roger L.},
title={Chapter 22. Head Injuries},
booktitle={CURRENT Diagnosis & Treatment Emergency Medicine, 7e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2011},
url={accessemergencymedicine.mhmedical.com/content.aspx?aid=55750036}
}