@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={accessemergencymedicine.mhmedical.com/content.aspx?aid=55749765} }