@inbook{55749765,
author={Ryan P. Woods, MD and Jason Seamon, DO, MHS, FACEP, FAAEM},
editor={Stone, C. Keith and Humphries, Roger L.},
title={Chapter 21. Arthritis & Back Pain},
booktitle={CURRENT Diagnosis & Treatment Emergency Medicine, 7e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2011},
url={accessmedicine.mhmedical.com/content.aspx?aid=55749765}
}