@inbook{55754276, author={Elizabeth Davis, MD and Kimberly J. Powers, MD}, editor={Stone, C. Keith and Humphries, Roger L.}, title={Chapter 36. Gastrointestinal Emergencies}, 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=55754276} }