@inbook{55748869, author={Timothy G. Price, MD, FACEP, FAAEM and Zachary E. Armstrong, MD}, editor={Stone, C. Keith and Humphries, Roger L.}, title={Chapter 16. Gastrointestinal Bleeding}, 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=55748869} }